the wiring is completely hacked in my car, previos owners were definatly not people that should have been near a vehicle. will a unversal harness from painless or other manufactures work as a replacement? has anyone ever used one of these replacements? also i took out my heater box and put a block off plate in cause the box was smashed up from the previous engine swap somone did, planned on replacing it with a good stock unit but i think ifound somthin that might be alittle nicer and give more room in the engine bay and cleaner appearence. im thinking about a flex alite mojave heater up uder thdash. anyone ever tried this? thanks