Hey guys new member here. I recently bought a 2002 rcsb 4.3 silverado to build in remberance of my late grandfather. The cab had been stripped by the previous owner and it had a few rust spots. I picked up a wrecked 2004 long bed silverado that had a 5.3 in it with a complete interior. The 5.3 has been removed before I bought it but all the cab wiring had remained with it. I also picked up a 6.0 and 4l80e from a low mileage 2005 exspress cutaway with harness and computer. My dilemma is the cab has the DBW pedal and TAC. The 2005 6.0 from the exspress has a DBC throttle body currently so what would be easier to do? Swap the pedal or swap the TB. I wanted to do ls3 heads and intake and leave the DBW but not sure of the exspress computer is capable of controlling the IAC and etc. Any thoughts? At the moment I'm not far enough into the project that I can't adapt either way with what we come up with.