I am getting a little confused about all the wiring harnesses involved in my LS1 swap into my 68 Camaro convertible. I have the original wiring harness and computer from the 2004 Corvette LS1 engine and I have the American Auto Wire complete car harness. This has to control my 4L80E transmission also. Do I need to buy any other harnesses? A trans harness? A stand alone custom harness? Can I use what I have and make everything work? Just wondering....