I am in the middle of putting a 01 Cobra engine in a 04 shell (No wiring). I have the engine harness and all the harnesses out of a 94 GT. I am wondering what years of harnesses are compatible. I have looked through the forums and cant find any definate answers. My questions are.... Are all 99-04 harnesses the same? Is there any difference between cobra and GT harnesses other than engine harness? Can i use 03 GT wiring with this engine? Thanks for any help.