{"id":1972031,"date":"2026-02-06T10:48:10","date_gmt":"2026-02-06T15:48:10","guid":{"rendered":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/"},"modified":"2026-02-23T16:37:29","modified_gmt":"2026-02-23T21:37:29","slug":"1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2","status":"publish","type":"product","link":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/","title":{"rendered":"1966 Buick Riviera GS Custom"},"content":{"rendered":"<p class=\"text-sm\"><strong class=\"font-semibold\">1966 Buick Riviera GS \u2013 Elegance Meets Performance<\/strong><\/p>\n<p class=\"text-sm\">This\u00a0<strong class=\"font-semibold\">1966 Buick Riviera GS<\/strong>\u00a0is a\u00a0<strong class=\"font-semibold\">stunning blend of originality, craftsmanship, and tasteful modernization<\/strong>, offering the perfect balance of\u00a0<strong class=\"font-semibold\">classic Buick luxury<\/strong>\u00a0and\u00a0<strong class=\"font-semibold\">modern performance enhancements<\/strong>. Powered by its\u00a0<strong class=\"font-semibold\">numbers-matching 425ci\/340HP Nailhead V8<\/strong>\u00a0and paired with the original\u00a0<strong class=\"font-semibold\">ST400 switch-pitch automatic transmission<\/strong>, this Riviera delivers the\u00a0<strong class=\"font-semibold\">smooth yet commanding performance<\/strong>\u00a0that defines Buick\u2019s Grand Sport heritage. With extensive mechanical upgrades, a\u00a0<strong class=\"font-semibold\">show-stopping Maroon Metallic finish<\/strong>, and a\u00a0<strong class=\"font-semibold\">customized luxury interior<\/strong>, this Riviera GS is a\u00a0<strong class=\"font-semibold\">turn-key masterpiece<\/strong>\u00a0ready to drive, show, and admire.<\/p>\n<hr class=\"my-5\" \/>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Key Features &amp; Highlights:<\/strong><\/h3>\n<h4 class=\"font-semibold pdf-heading-class-replace pb-xxs text-md leading-[24px] [&amp;:not(:first-child)]:pt-xl [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Performance &amp; Drivetrain:<\/strong><\/h4>\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Numbers-matching 425ci Nailhead V8<\/strong>, producing\u00a0<strong class=\"font-semibold\">340 horsepower<\/strong><\/li>\n<li class=\"[&amp;&gt;p]:inline\">Paired with the original\u00a0<strong class=\"font-semibold\">ST400 switch-pitch automatic transmission<\/strong>, offering smooth and responsive shifts<\/li>\n<li class=\"[&amp;&gt;p]:inline\">Performance upgrades include:\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">MSD electronic distributor<\/strong>\u00a0for modern ignition reliability<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">QFT Slayer 750 carburetor<\/strong>\u00a0for enhanced fuel delivery<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Custom headers<\/strong>\u00a0and a\u00a0<strong class=\"font-semibold\">polished 250-amp alternator<\/strong><\/li>\n<\/ul>\n<\/li>\n<li class=\"[&amp;&gt;p]:inline\">Features a\u00a0<strong class=\"font-semibold\">custom Strange 3.55 rear differential<\/strong>, providing spirited acceleration<\/li>\n<\/ul>\n<hr class=\"my-5\" \/>\n<h4 class=\"font-semibold pdf-heading-class-replace pb-xxs text-md leading-[24px] [&amp;:not(:first-child)]:pt-xl [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Suspension &amp; Braking:<\/strong><\/h4>\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\">Completely rebuilt suspension for improved handling and ride quality<\/li>\n<li class=\"[&amp;&gt;p]:inline\">Equipped with\u00a0<strong class=\"font-semibold\">4-wheel Wilwood disc brakes<\/strong>, ensuring confident stopping power<\/li>\n<li class=\"[&amp;&gt;p]:inline\">Features\u00a0<strong class=\"font-semibold\">fast-ratio power steering<\/strong>, delivering precise and responsive control<\/li>\n<\/ul>\n<hr class=\"my-5\" \/>\n<h4 class=\"font-semibold pdf-heading-class-replace pb-xxs text-md leading-[24px] [&amp;:not(:first-child)]:pt-xl [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Exterior:<\/strong><\/h4>\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\">Finished in a\u00a0<strong class=\"font-semibold\">deep Maroon Metallic base\/clear paint<\/strong>, offering a rich and timeless appearance<\/li>\n<li class=\"[&amp;&gt;p]:inline\">Accented by\u00a0<strong class=\"font-semibold\">NOS-quality chrome<\/strong>\u00a0and\u00a0<strong class=\"font-semibold\">hand-polished trim<\/strong><\/li>\n<li class=\"[&amp;&gt;p]:inline\">Custom exterior touches include:\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Frenched \u201968 hood spear<\/strong>\u00a0and\u00a0<strong class=\"font-semibold\">shaved \u201cRiviera\u201d badging<\/strong><\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Through-body side exhaust<\/strong>\u00a0with polished stainless tips<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">20\u201d Foose-style wheels<\/strong>\u00a0with\u00a0<strong class=\"font-semibold\">redline tires<\/strong><\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Electronic sequential tail lamps<\/strong>, adding a modern flair<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr class=\"my-5\" \/>\n<h4 class=\"font-semibold pdf-heading-class-replace pb-xxs text-md leading-[24px] [&amp;:not(:first-child)]:pt-xl [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Interior:<\/strong><\/h4>\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\">Hand-sewn\u00a0<strong class=\"font-semibold\">black leather and alcantara suede interior<\/strong>\u00a0with\u00a0<strong class=\"font-semibold\">red double stitching<\/strong><\/li>\n<li class=\"[&amp;&gt;p]:inline\">Features\u00a0<strong class=\"font-semibold\">power Strato bench seating<\/strong>, offering both comfort and style<\/li>\n<li class=\"[&amp;&gt;p]:inline\">Includes a\u00a0<strong class=\"font-semibold\">leather-wrapped dash<\/strong>,\u00a0<strong class=\"font-semibold\">maroon suede headliner<\/strong>, and\u00a0<strong class=\"font-semibold\">custom door panels<\/strong><\/li>\n<li class=\"[&amp;&gt;p]:inline\">Modern comforts include:\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Vintage Air front and rear systems<\/strong>\u00a0for climate control<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Bluetooth stereo<\/strong>\u00a0for modern connectivity<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Custom lighting<\/strong>\u00a0and an\u00a0<strong class=\"font-semibold\">integrated tachometer console<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr class=\"my-5\" \/>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Documentation:<\/strong><\/h3>\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\">Accompanied by its\u00a0<strong class=\"font-semibold\">original GM Protect-O-Plate<\/strong>\u00a0and\u00a0<strong class=\"font-semibold\">owner\u2019s manual<\/strong>, adding to its authenticity and provenance<\/li>\n<\/ul>\n<hr class=\"my-5\" \/>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\"><strong class=\"font-semibold\">Why It Stands Out:<\/strong><\/h3>\n<p class=\"text-sm\">This\u00a0<strong class=\"font-semibold\">1966 Buick Riviera GS<\/strong>\u00a0is a\u00a0<strong class=\"font-semibold\">rare and exceptional example<\/strong>\u00a0of Buick\u2019s Grand Sport heritage, combining\u00a0<strong class=\"font-semibold\">timeless elegance<\/strong>,\u00a0<strong class=\"font-semibold\">modern performance<\/strong>, and\u00a0<strong class=\"font-semibold\">luxury refinement<\/strong>. With its\u00a0<strong class=\"font-semibold\">numbers-matching drivetrain<\/strong>,\u00a0<strong class=\"font-semibold\">extensive upgrades<\/strong>, and\u00a0<strong class=\"font-semibold\">show-quality presentation<\/strong>, this Riviera GS is a\u00a0<strong class=\"font-semibold\">collector-grade classic<\/strong>\u00a0that\u2019s ready to be driven, shown, and admired. Its\u00a0<strong class=\"font-semibold\">custom touches<\/strong>,\u00a0<strong class=\"font-semibold\">modern comforts<\/strong>, and\u00a0<strong class=\"font-semibold\">impeccable craftsmanship<\/strong>\u00a0make it a\u00a0<strong class=\"font-semibold\">one-of-a-kind masterpiece<\/strong>.<\/p>\n<hr class=\"my-5\" \/>\n<p class=\"text-sm\"><strong class=\"font-semibold\">Additional Details:<\/strong><\/p>\n<ul class=\"list-inside list-disc py-1.5 pl-5xl text-sm [&amp;_ol]:py-0 [&amp;_ol]:pl-4 [&amp;_ul]:py-0 [&amp;_ul]:pl-4\">\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Engine:<\/strong>\u00a0Numbers-matching 425ci Nailhead V8 (340HP)<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Transmission:<\/strong>\u00a0Original ST400 switch-pitch automatic<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Exterior:<\/strong>\u00a0Maroon Metallic with NOS-quality chrome and custom touches<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Interior:<\/strong>\u00a0Black leather and alcantara suede with modern amenities<\/li>\n<li class=\"[&amp;&gt;p]:inline\"><strong class=\"font-semibold\">Wheels\/Tires:<\/strong>\u00a020\u201d Foose-style wheels with redline tires<\/li>\n<\/ul>\n<hr class=\"my-5\" \/>\n<p class=\"text-sm\"><strong class=\"font-semibold\">Conclusion:<\/strong><br \/>\nThis\u00a0<strong class=\"font-semibold\">1966 Buick Riviera GS<\/strong>\u00a0is a\u00a0<strong class=\"font-semibold\">stunning blend of classic luxury and modern performance<\/strong>, offering\u00a0<strong class=\"font-semibold\">elegance, power, and refinement<\/strong>\u00a0in one package. With its\u00a0<strong class=\"font-semibold\">numbers-matching drivetrain<\/strong>,\u00a0<strong class=\"font-semibold\">extensive upgrades<\/strong>, and\u00a0<strong class=\"font-semibold\">show-stopping presentation<\/strong>, this Riviera GS is a\u00a0<strong class=\"font-semibold\">turn-key opportunity<\/strong>\u00a0to own a piece of Buick history. Don\u2019t miss your chance to add this\u00a0<strong class=\"font-semibold\">masterfully crafted classic<\/strong>\u00a0to your collection!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1966 Buick Riviera GS \u2013 Elegance Meets Performance This\u00a01966 Buick Riviera GS\u00a0is a\u00a0stunning blend of originality, craftsmanship, and tasteful modernization, offering the perfect balance of\u00a0classic Buick luxury\u00a0and\u00a0modern performance enhancements. Powered by its\u00a0numbers-matching 425ci\/340HP Nailhead V8\u00a0and paired with the original\u00a0ST400 switch-pitch automatic transmission, this Riviera delivers the\u00a0smooth yet commanding performance\u00a0that defines Buick\u2019s Grand Sport heritage. With [&hellip;]<\/p>\n","protected":false},"author":14538,"featured_media":1972032,"comment_status":"open","ping_status":"closed","template":"","meta":{"content-type":""},"product_cat":[18],"product_tag":[806,114,55],"class_list":["post-1972031","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-auctions","product_tag-buick","product_tag-riviera","product_tag-muscle-car-auctions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>1966 Buick Riviera GS Custom - accauctions.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"1966 Buick Riviera GS Custom - accauctions.com\" \/>\n<meta property=\"og:description\" content=\"1966 Buick Riviera GS \u2013 Elegance Meets Performance This\u00a01966 Buick Riviera GS\u00a0is a\u00a0stunning blend of originality, craftsmanship, and tasteful modernization, offering the perfect balance of\u00a0classic Buick luxury\u00a0and\u00a0modern performance enhancements. Powered by its\u00a0numbers-matching 425ci\/340HP Nailhead V8\u00a0and paired with the original\u00a0ST400 switch-pitch automatic transmission, this Riviera delivers the\u00a0smooth yet commanding performance\u00a0that defines Buick\u2019s Grand Sport heritage. With [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/\" \/>\n<meta property=\"og:site_name\" content=\"accauctions.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AllCollectorCarsdotcom?ref=hl\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-23T21:37:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/allcollectorcars.nyc3.digitaloceanspaces.com\/auction\/wp-content\/uploads\/2026\/02\/06104811\/93bd829c9b889233966b113832b37220747a5509.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@allcollectorcar\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/\",\"url\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/\",\"name\":\"1966 Buick Riviera GS Custom - accauctions.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/allcollectorcars.nyc3.digitaloceanspaces.com\\\/auction\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/06104811\\\/93bd829c9b889233966b113832b37220747a5509.jpg\",\"datePublished\":\"2026-02-06T15:48:10+00:00\",\"dateModified\":\"2026-02-23T21:37:29+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/#primaryimage\",\"url\":\"https:\\\/\\\/allcollectorcars.nyc3.digitaloceanspaces.com\\\/auction\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/06104811\\\/93bd829c9b889233966b113832b37220747a5509.jpg\",\"contentUrl\":\"https:\\\/\\\/allcollectorcars.nyc3.digitaloceanspaces.com\\\/auction\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/06104811\\\/93bd829c9b889233966b113832b37220747a5509.jpg\",\"width\":1920,\"height\":1280,\"caption\":\"1966 Buick Riviera GS Matching Numbers, Custom Build, Amazing Car!\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/vehicles\\\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\",\"item\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"1966 Buick Riviera GS Custom\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/#website\",\"url\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/\",\"name\":\"accauctions.com\",\"description\":\"Live Online Classic Car Auctions\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/#organization\",\"name\":\"ACC-Auctions.com\",\"url\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"ACC-Auctions.com\"},\"image\":{\"@id\":\"https:\\\/\\\/www.allcollectorcars.com\\\/classic-car-auctions\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/AllCollectorCarsdotcom?ref=hl\",\"https:\\\/\\\/x.com\\\/allcollectorcar\",\"https:\\\/\\\/www.instagram.com\\\/allcollectorcars_dot_com\\\/?hl=en\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/allcollectorcars-com\",\"https:\\\/\\\/www.pinterest.com\\\/allcollectorcars\\\/\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/AllCollectorCars\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"1966 Buick Riviera GS Custom - accauctions.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/","og_locale":"en_US","og_type":"article","og_title":"1966 Buick Riviera GS Custom - accauctions.com","og_description":"1966 Buick Riviera GS \u2013 Elegance Meets Performance This\u00a01966 Buick Riviera GS\u00a0is a\u00a0stunning blend of originality, craftsmanship, and tasteful modernization, offering the perfect balance of\u00a0classic Buick luxury\u00a0and\u00a0modern performance enhancements. Powered by its\u00a0numbers-matching 425ci\/340HP Nailhead V8\u00a0and paired with the original\u00a0ST400 switch-pitch automatic transmission, this Riviera delivers the\u00a0smooth yet commanding performance\u00a0that defines Buick\u2019s Grand Sport heritage. With [&hellip;]","og_url":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/","og_site_name":"accauctions.com","article_publisher":"https:\/\/www.facebook.com\/AllCollectorCarsdotcom?ref=hl","article_modified_time":"2026-02-23T21:37:29+00:00","og_image":[{"width":1920,"height":1280,"url":"https:\/\/allcollectorcars.nyc3.digitaloceanspaces.com\/auction\/wp-content\/uploads\/2026\/02\/06104811\/93bd829c9b889233966b113832b37220747a5509.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_site":"@allcollectorcar","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/","url":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/","name":"1966 Buick Riviera GS Custom - accauctions.com","isPartOf":{"@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/#primaryimage"},"image":{"@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/#primaryimage"},"thumbnailUrl":"https:\/\/allcollectorcars.nyc3.digitaloceanspaces.com\/auction\/wp-content\/uploads\/2026\/02\/06104811\/93bd829c9b889233966b113832b37220747a5509.jpg","datePublished":"2026-02-06T15:48:10+00:00","dateModified":"2026-02-23T21:37:29+00:00","breadcrumb":{"@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/#primaryimage","url":"https:\/\/allcollectorcars.nyc3.digitaloceanspaces.com\/auction\/wp-content\/uploads\/2026\/02\/06104811\/93bd829c9b889233966b113832b37220747a5509.jpg","contentUrl":"https:\/\/allcollectorcars.nyc3.digitaloceanspaces.com\/auction\/wp-content\/uploads\/2026\/02\/06104811\/93bd829c9b889233966b113832b37220747a5509.jpg","width":1920,"height":1280,"caption":"1966 Buick Riviera GS Matching Numbers, Custom Build, Amazing Car!"},{"@type":"BreadcrumbList","@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/vehicles\/1966-buick-riviera-gs-matching-numbers-custom-build-amazing-car-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/"},{"@type":"ListItem","position":2,"name":"Products","item":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/shop\/"},{"@type":"ListItem","position":3,"name":"1966 Buick Riviera GS Custom"}]},{"@type":"WebSite","@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/#website","url":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/","name":"accauctions.com","description":"Live Online Classic Car Auctions","publisher":{"@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/#organization","name":"ACC-Auctions.com","url":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/#\/schema\/logo\/image\/","url":"","contentUrl":"","caption":"ACC-Auctions.com"},"image":{"@id":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/AllCollectorCarsdotcom?ref=hl","https:\/\/x.com\/allcollectorcar","https:\/\/www.instagram.com\/allcollectorcars_dot_com\/?hl=en","https:\/\/www.linkedin.com\/company\/allcollectorcars-com","https:\/\/www.pinterest.com\/allcollectorcars\/","https:\/\/www.youtube.com\/user\/AllCollectorCars"]}]}},"_links":{"self":[{"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/product\/1972031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/types\/product"}],"author":[{"embeddable":true,"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/users\/14538"}],"replies":[{"embeddable":true,"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/comments?post=1972031"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/media\/1972032"}],"wp:attachment":[{"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/media?parent=1972031"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/product_cat?post=1972031"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.allcollectorcars.com\/classic-car-auctions\/wp-json\/wp\/v2\/product_tag?post=1972031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}