Snailor Built

So on the dyno my injector wire shorted out and ate the dash and the engine harness. It is completely destroyed and I bought a uncut virgin wiring harness for the engine and found a wrecked eg coupe for dumb cheap that I would like to buy, it is an automatic though. How much of a difference is the auto-manual dash harness, and please only respond if you know for sure, I appreciate the suggestive help however I need to know if it is a simple swap or not. Thanks.