Awesome build and truck. Thanks for the updates, I just picked up a low mileage 5.3 out of a 07 Silvy.
What is your recommendation on the harness? Should I use the harness that came with the 5.3 or go new. I didn't get the ecu nor the DBW pedal so I will need to get those somewhere also.
Do you have a list of items needed for this conversion? Would make for a good sticky. nice job