[Dieselwrencher]

I wouldn't re-use the entire OE harness if I had too. I'd use what I had to to make the 47re shift and that's pretty much it. Now if you do because you're trying to get your best bang for your buck, you probably can use it but you'll be wishing you paid them the cash to do it and not jack with it. Haha There's no need to jack with the throttle wires..... Your APPS, applied pedal position sensor, is bolted to the cylinder head, You will just need to install a really long throttle cable to go from your foot pedal to your apps bracket. Lengthening the wires that far could chabge the resistance and really jack your throttle. It is only a 5v system from the APPS to the ECM. I'd really get your suspension stuff done now and place the cab, engine/trans etc while you build it so you're not re-doing it.