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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 ...

Though you could still order a Stage 1 455 in your GS in 1971, this one is the base offering 350 four-barrel. The smaller engine is not called out on the Buick’s flanks, so on the fenders ...

According to General Motors, the Regal GS is officially the fastest Buick ever made. The sedan's lead development engineer, Bill Rietow, and powertrain drive quality engineer, John Townsend ...