Help me win this argument 400 in a 72.

The aftermarket has widened the gap between factory HP and what can in many cases be easily achived. Since GM stuff is so cheap and avaiable Mopar guys have to pull more tricks out of your hats. I love Mopar but its true..

The aftermarket has also fixed some initial engineering problems in the original designs or allowed us to go beyond what was originally available creating superior hybrids isf you will. I.e. 451 stroker, etc.