[bigblockcoupe]

ok you are going to need the v8 harness because the wiring is different you have to use the v8engine control harness and computer you can't just plug the v8 into the v6 harness it is entirely different and you probably will need the v8 headlight harness that plugs in under the starter solenoid on the driver side and wraps around the front of the car this also includes the correct alternator wiring and will plug into the v6 harness under the starter solenoid you don't have to change the interior under dash harness.