Plymouth sold only 658 Road Runner convertibles in 1970. This drop-top is one of only 20 equipped with the 440 Six-Barrel and four-speed manual.

This high-impact Mopar still has its original interior, but the factory 383-cubic-inch V8 is long gone. The engine bay isn't ...

What killed horsepower in the 1970s and 1980s? While the common consensus is 1972, the truth is that the real date depends on ...