After looking at the AirRam website, i think they've sold me on their 4.7 performance intake products. I'm going to order their H/O cam's, 72mm throttle body, and either their 03-07 intake manifold, or the 2008 manifold. I realize the 2008 needs their adapter kit, but i'm willing to pay the price if the gains are worth it. Which year intake manifold will offer the most gains?

 

I don't know myself but I will Bump your thread maybe someone does know.