I am now looking at what ecm to drive my ls7 in my RCR. The motor is currently stock. I am upgrading ancillary parts an minor changes I am going to reverse the intake and have the parts for that. I have a remote water pump system going in, this will bring the motor forward in the chassis as is needed. I have aeromotive fuel rails. maybe some cf or fabricated valve covers. tuning wise I am considering a cam as well. but that would be it. I need to buy the wiring harness and ecm. I am considering a number of different systems. What did you come up with.