This would be great, especially with the 440 c.i. engine. Engine swaps could include the 318, 340, 360, 383, 392, 400, 413 and 426 HEMI. Even just the 383, 440, and 426 would be nice to have.
1974 Plymouth Roadrunner 360 4 Speed Manual
or
1974 Plymouth Roadrunner 400 4 Speed Manual
or
1974 Plymouth Roadrunner 440 3 Speed TorqueFlite
would be cool to see in FH