My plan right now is to drop a 470, or maybe 451 stroker in my Challenger. The goal is not about all out power, but I want an increase over manifolds without the hassle of full length headers. My research so far brings me to Schumacher or TTI. They are both Mopar only shops that seem to have good reputations. I am hoping someone has ran, or has experience with both for comparison of the good or bad of either.