2000 ws.6 with stock manifolds, y and a borla adj cat back [wide open plate]
1998 z28 with comp R lifters,228/230 .558/.591 112 cam, 918 springs, hardend P/R's, LS6 intake,Taylor wires, NGK's, Pacesetter L/T's, custom Y-pipe, borla adj. catback [wide open plate], all free mods, and bolt on's, slotted rotors, S/D tune, NO MAF,full built trans, EDGE 3,000 converter