14. Plymouth Duster 340
As an economy brand, Plymouth has been successful at the lower end of the market since the early ’60s with their Valiant model. But by the late ’60s and early ’70s, the compact market had grown, so Plymouth introduced the Duster 340. This model was a junior muscle car since it looked bigger than its competitors, yet it had a smaller 340 engine with 275 HP.
Plymouth never anticipated the success that the Duster 340 achieved, so production doubled in just a few months. Drivers considered the 340 a muscle car despite being a compact model thanks to its lightweight. The 275 HP could accelerate to 0 to 60 mph in a respectable time of just over six seconds.