3. 1970 Plymouth Duster 340
The 1970 Plymouth Duster 340 was held back by factory carburetors and restrictive exhaust systems, limiting its true muscle potential. Enthusiasts quickly addressed these issues by installing larger carburetors and performance headers, unlocking significant gains in power and acceleration. These upgrades transformed the Duster 340 into a respected street racer. Discover more about the Duster’s evolution at Hemmings.