Introduced for the 1968 model year as Plymouth's most affordable muscle car, the Road Runner became a big hit. The company sold nearly 200,000 units through 1971, when Chrysler discontinued its ...
Much like the GTX, the Road Runner was restricted to big-block V8 engines. However, it featured a 383-cubic-inch (6.3-liter) unit as standard, whereas the GTX came with the 440-cubic-inch (7.2-liter) ...