17. Buick GSX
The GSX debuted in 1970 with an aggressive graphics package that was unusual for Buicks. Also, it was available in two bright colors, Saturn Yellow and Apollo White. The GSX came with a front and rear spoiler, functioning hood scoops, side stripes, and Rally wheels. The power output was the same at 345 HP/510 lb-ft. However, because the Buick 455 was significantly lighter than the Chevelle 454 and the Plymouth Hemi 426, the GSX was a winner in street races across America.
Despite the qualities of the GSX and numerous accolades from the motoring press, Buick built less than 700 of them. The GSX package added $1,100 over the price of a regular GS 455. So the price tag proved to be too expensive for most buyers. Although the GSX option was available in 1971 and 1972, they produced those models in even smaller numbers.