I have tried to look this up by using the search and have not really found an answer. I will be swapping in an '01 cobra engine with 8,000 miles my '00 Gt since i recently spun a bearing. The engine is coming from a donor car and I have access to everything i will need from it. I have heard that the swap is as easy as dropping the new engine in and reusing my GT harness only having to extend the COP wires and a few others (throttle cable, ex.) and a retune on the GT computer with a cobra tune. Others state that I will have to splice in parts of the cobra harness to the GT harness. I know that the web site www.cobrapoweredgt.com is know longer. Are the fuel systems both return-less? Once again I have access to a donor car I will probably be swapping or the gauge cluster also which I know will required disabling the PATS. Any help would be greatly appreciated I know this swap has been performed many times.