Well, in my case I could have done just the LS but I started doing that and realized I was cutting corners and doing things that would just cause me misery later, or worse yet be broke down on the road somewhere because of old trash the previous owner did that has nothing to do with the LS swap. I would rather take the time and do it right and have something that is dependable, reliable, and more importantly, not be having to trouble shoot every little issue that comes up, so I figure if I gotta redo the wiring harness, patch a couple of hole sin the floorboard, and then swap in a 14 bolt to withstand some occasional offroad abuse, it's just going to give me a more rewarding finished product. That being said Sunday I just uncurled a huge spaghetti monster from EZ-wiring and I'm trying to give myself the old pep talk that it is going to be fun, lol. It only took me about 2 hours to sort out the engine compartment and front blinker stuff. I also got all the wiring for the tail end of the truck sorted, now I just gottta climb under the dash and slay that beast. The only catch 22 about this harness is that it did not come with the bulkhead connector so I either need to pull my old one apart, clean it, de-pin it, and find some new pins for the new wiring, or close up the hole and use one of the more modern aftermarket bulkhead connectors. Not sure which direction I want to go, but I would rather avoid having to touch the old bulkhead connector with that nasty black gorilla snot they have on there.... If anyone knows of a source to get a new bulkhead connector I'd gladly take that advice!