I used a 99 Vortec 5.7 with a 96 computer, removed purge canister, EGR valve and am running a TH400 (non electronic transmission) I installed the front O2 sensors, rear O2's will not change engine perameters only set a code so they are unhooked. and thinned out wiring harness, I did add a VSS signal from the rear u-joint, (From JTR) for better fuel mileage. Runs great. Now it will set mucho codes but if your concerned get the computer reflashed to what you want. Zeke
