Produced for just three years (from 1970 to 1972), the Buick GSX started its life as a performance package atop the Gran Sport, which turned into a car derived from the Skylark platform.

However, there are still a few chinks in GM’s armor. The Buick Skylark GS is one of them. It seems mind-boggling that GM could miss the mark so widely with this overpriced, under-equipped ...