I might be asking a question that has been answered before but since I was deployed I didn't see it. when it comes to the wiring differences between the 2.2 2.4 and the ecotec are any of the parts compatible. I know people have swapped tanks gauges and what not but can you just re-pin the plugs to do an engine swap? I work and aircraft and I have re pinned many plugs and it got me thinking if you can just re pin the harness that is in the engine bay so that you don't have to change any of the other things inside the car or in the rear end........in other words is a full swap of a harness necessary or is it possible to re use the cabin harness and accesories. if any one has an answer please tell me I am about to build an engine and I don't know what to go for look at my profile for info.