A purple Hemi is currently the world's most expensive 1970 Road Runner. It's not this car, but it's just as spectacular.

Plymouth used the GTX badge on the 440-equipped Road Runner frm 1972 to 1974. Only 386 units were sold in the final year.

The 1974 Plymouth Road Runner arrived just as the classic muscle era was running out of road, yet it stubbornly held on to the traits that had made Detroit’s street bruisers famous. Power ratings were ...

This overlooked Mopar is almost as quick as a Hemi, and only 246 units are known to exist.