Well, the swap is almost complete. The only major task left is wiring the engine harness to the firewall connector. I checked the two connectors and the pins are in dirrent spots so I was thinking I could splice the old connector into the new wiring harness but then I would need wiring diagrams for both cars and I would ruin the TBI harness. I know somone has done this exact swap (88 TBI to 91 SD TPI), junkyarddog? Anyway did you guys just plug in the new connector? I'm not to eager to do that as I might fry something in the process. Thanks again.