well, i was not really ready to install this but the right deal fell into my lap and i ended up getting a new heart for this project:
it is a 2002 4.8L out of a Silverado. Kid got T boned and bought it back to make back some money. ended up paying 500 bucks for the whole motor, harness, compurer and stock air box.
now just have to get the parts to adapt this to the NV4500 and start figuring out the wiring and computer part.