Yeah, I am gonna hold off I guess. I've heard a pressure box really smoothes out the PMCR though. Anyone want to post thier Stacked combos with info on 05 models?? I sure would appreciate it. By the way CUMMINZ, thats a sharp looking truck you got, I like the bumper sticker 2 hehe. Cumminz, does it seem like anything over 3/3 on the pm is useless on your truck??