| I run the Quadzilla stealth 2 and 4" MBRP turbo back w/muffler. This truck just screams! The only problem I have is the tranny just seems to hesitate to shift from 2nd to 3rd when i run the 90+ hp settings. I would go Quad.
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Scott
2007 GMC 2500HD
LMM - Allison 6-speed
Quadzilla Stealth 2
MBRP 4" (dpf/cat delete) turbo-back
AFE stage 2 CAI, resonator plugged
Transgo Jr.
AMSOil in front/rear diff, tranny, and engine
BFG all-terrain 285/75/16
2.5" leveling kit
Bad-ass sound thanks to mobilesoundsystems
All tranny/lube work done by jamestranstech | 
Linear Mode
