I have a 85 tpi and i am switching to a 165 ecm i got a hold of 87 wiring harness, im goning to swap the whole harness and ecm due to the condition of the original harness (beat up and some broken connectors), am i going to run into any issues, I found a lot of info on repinning the existing harness but not much on complete harness swap, any body done this before and run into any suprises

TIA
Dave