Well the problem is I can't find any 5.3s with any 4x4 4l60e's near me. It seems like it would be cheaper to actually buy them separate. I found a guy selling a 2012 Silverado 5.3 (30,000 miles) with all smog equipment, harness and a chiped ecu for 1200 on Craigslist and would just have to buy...