Okay I am making my list of everything I need to swap my 1980 Mustang over to EFI. I want to keep the same dash, so here is what I am thinking.. I have an 89 computer harness with the injector harness and 02 sensor harness. Can I just get an 86 Mustang body harness, and the 89 harness will plug right in? Or do I need to do some major wire modifications to make this work? Thanks