I don't want to high jack the thread 69 440 Cuda but I would say that the mustang cubic inch vs cubic inch that would really give the mopars some competition was built in 71 only. I'm a diehard mopar fan but still can appreciate all muscle cars. I'm talking about the 71 boss 351 mustang. A heavy car but that motor was really underrated at 335 horse. Your thoughts on this?