I'm doing a bodylift to clear a Gen 2 transmission and superselect T-case too, I was originally going to do a stand alone wire harness to run the 1UZ in the truck but I can almost guarantee i'll sell this truck at some point so i'm going to do fully integrated harness into the Gen 1 Montero. This means factory connectors and wire colors so the OEM schematics can be followed if there are ever any issues. The one challenge is going to be the gauges particularly the speedometer because it's cable driven, I want it to look and function stock. If i can find the right aftermarket gauges that look correct and fit i'll run those. I could make the old gauges work but that means spending some $500 on interfaces to make the crappy old gauges work properly and eventually they won't be able to be serviced.