2004 Chevy 2500hd 4x4, EFI dsp5, diamond eye 4 in straight, erg plate, pcv reroute, lbz mouth piece, all on headlight mod. DDM HID (high,low,fog). Fuel rail fittings and updated Cp3 feed line. 20x10 XD wheels wrapped with 35 12.50 nitto mud grapplers. Leveling kit.