Rare Buick GS 400 Convertible joins Hagerty Marketplace auction with fresh upgrades and a Power Tour appearance. A striking 1968 Buick GS 400 Convertible equipped with a four-speed manual transmission ...

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As the sixties drew to a close, nearly everyone in Detroit had something outdo the others, and this perpetual arms race led to a muscle car effervescence of epic proportions. General Motors’ divisions ...

*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration ...

One of just 212 built, this numbers-matching GS 400 Stage 1 blends luxury and muscle in a rising collector market. A highly collectible piece of American muscle car history has come to light in the ...

1964 is unanimously recognized among the gearhead society for the three major events that occurred during that glorious moment in Motor City history: the muscle car, the pony car, and the 426 Hemi.