I'm one of those guys that like to do things themselves so buying a harness is kind of a last resort, that and I am a kinda poor guy lol. I've never been so stumped with wiring in my life, usually wiring is the one thing I rock at. I think I'm going to put the LS1 into an the 88 pickup though. After the trouble I've run into on this I think I'd like to keep it as simple as possible lol. I guess if I had a proper diagram it would be a lot easier.