2000 GMC Sierra Z71 6.0 LQ9, Mahle Forged Flatops, Comp 208/212-554/558 115 LSA, LS6 Valvesprings, Harland Sharp Roller Rockers,Trick Flow 7.4 pushrods, NGK TR55 plugs, MSD wires, Melling High Volume/Pressure oil pump,LS7 lifters, Arp main studs-rod bolts-head bolts, Nelson's 93 Octane Tune, rear 02's and Egr Delete, BBK headers ito true 2 3/4 duals w/dual super 40 flowmasters, built 4L60E, Circle-D 3200 stall