Contact hotrodlane.cc for the adapters to use the original transmission and transfer case. That much HP may blow the transfer case to pieces but you were going to throw it away anyhow, huh. If you have the wiring harness and PCM you have the battle won on the conversion. Anyone with HPTuners for your year model PCM can disable the VATS for you or you could send it to Allen at NelsonPerformance and he can disable it for you for a nominal fee. He has done that for numerous people, myself included. I can understand going for the nostalgic look but I love the high tech look much more. I disabled the smog pump, rear 02 sensors and EGR. I had the truck inspected in December and it passed with flying colors.