I am currently in the middle of swapping in a 4.3 l in my 97 wrangler (in place of 2.5). I have all of the mechanical stuff done. I am currently working on the wiring. I would assume I would need to keep the fuel pump and speedometer from the jeep wiring and use the jeep computer to run the dash. I would assume I would need to keep the same jeep wiring as someone swapping g a GM V8. For those who have done that swap, do you have advice or wiring diagrams on what jeep wiring to keep. I have had the GM harness and computer redone to run stand alone.