I'm swapping a 91 body on a 85 frame with a TPI system on the motor. I don't need any of the engine harness, so is there anyway to get rid of the engine part of the harness on the cab? I already have a harness for the TPI. I don't want to just cut the wires at the firewall. The only thing I can think of is get a painless type harness for an older truck so it doesn't have most of the engine portion.