The 1968 Buick GS 400 Gran Sport convertible featured in Lou Costabile's "My Car Story" series is a rare and stunning Burnished Saddle color. Owner Greg Cilano purchased the car from a neighbor ...

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*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 ...

Buick has a rich history of great cars ... though think twice about trying to carry that kind of pace through tighter corners ...

One of the very few GS Stage 1 automatics built with a convertible top for the model’s debut year, this 30k-mile survivor ...