wiring harness question please help
Should I try to use the 99 harness and computer or modify the a4 harness for the t56 (if possible) and use the 98 computer? I know the biggest difference is the plugs for the engine harness that go under the dash. Or I would have to buy a 98 t56 harness.
There are a few options I guess but I need the cheapest easiest one

