34. Pontiac Catalina 421 “Swiss Cheese”
In the early 1960s, Pontiac realized that racing helps sell cars and the famous Detroit mantra “Win on Sunday-Sell on Monday” works. Pontiac had a good base for a fast super-stock car in the form of the two-door Catalina. It had a potent 421 V8 engine, but it needed to add power and subtract some weight. So to do the latter, Pontiac engineers manufactured numerous aluminum parts like bumpers, fenders, and a hood (via Supercars).
Interestingly, they soon nicknamed the car, “Swiss Cheese” since they also drilled holes in the frame to save a few pounds more. With its high compression 421 V8 engine delivering 410 HP, these Catalinas were lightning quick.