32. Buick GSX
In 1970, Buick decided to introduce the ultimate muscle car in the form of the legendary and scarce Buick GSX. The GSX stood for Gran Sport Experimental. It was a visually upgraded Gran Sport with Stage 1 performance package. It was available in two bright colors – Saturn Yellow and Apollo White (via GM Heritage).

The power output was the same (345 HP/510 lb.-ft). And because Buick’s 455 was significantly lighter than Chevelle’s 454 or Plymouth’s Hemi 426, the GSX was a winner in street races across America. However, despite all the qualities of the GSX and numerous accolades by the motoring press, Buick built less than 700 examples.