Going on in the next week: Air intake, 5" exhaust, B1-2 turbo, Drag Comp, Full Billet DTT, FASS 150/95, Guages. It's an 02 2500 QC/LB 4X4. I also have DD3s and I'm wondering what HP you guys think I will be at, and if you think I should go a head and drop the $ for some Mach 4s now... ... I want to be over the 500hp mark... .