2003 Chevrolet Silverado-2500hd Duramax 6.6l lb7 allison transmission | Signature Metal Fab SAS | EFI live tuned | 5 inch MBRP Turbo Back | 4.5 inch Bills Custom Intake S&B Filter | Pro Fab 3 inch Downpipe | 3.5 inch Profab Turbo Horn | Suncoast Stage 5 Transmission | 38/13.5/R24 Nitto Trail Grapplers MTs | 24x14 American Force Independence SS |