I just bought a 2010 roller. It’s a insurance buy back and the original owner pulled out the 6.2 the 6l90e the ecu and the wheels. Wheels have been found and purchased. I can’t afford to buy the proper engine and transmission. My big deal is the ecu. I want to keep the paddle shifters so can I rewrite the 4 speed transmission in the ecu and it work? Also I am going to run a 6.0 truck engine. Just to get it going. Eventually I am going to unharness a 6.2 with carberator and all that stuff but right now I’m on a budget. So can I program the paddle shifters for a 4l80e and then what ecu do I need?? I’m doing a cable drive peddle. That said a ecu is a ecu right???