I have an s4 na fc and with that i also an jspec s5 turbo motor with tranny and ecu and engine harness. i want to swap it into my s4 fc but i know that the s4 body harness will not plug into the s5 ecu, so i was wondering if i got an s5 body harness will it work out just fine using the s5 motor and ecu and the engine harness.