However, when we spotted this 1971 Buick GS Convertible (and yes, Buick considered Convertible to be part of the model’s name ...

While the Centurion’s performance wasn’t on par with Buick’s higher-end muscle cars like the GS 455 Stage ... The convertible, for example, had an MSRP of $4,678 in 1971, but by 1973 ...