My buddy did the 6.4 cam and PWR heads on his 09 Chally 5.7 and it picked up a ton! The heads are a big part of it, but the cam is almost .100 more lift than the stocker!
I just don't see the point in spending 800 bucks on a cam when a 60 dollar stocker has pretty close to the same specs! I'm piling up all the stuff I need for my truck, and as soon as it is completed and tuned...it will be here!
The 6.4 cam is in the .56x range compared to the .61x range of Comp. BUT...the 6.4 cam is good without the phase limiter that comp makes!