It's hard to say off of someone else's work. I used an OBD1 DA motor in my EF. I never touched the dash harness, just ordered an adapter from boomslang. As for your engine, I believe I ran the EF harness. Some plugs had to be changed and such (Boomslang directions worked like magic) or re-pinned...

What's your ultimate goal? If it was me, I'd quit the headache and get my hands on an engine harness FROM that EF. Then I'd re-pin and do whatever to hook it up to the motor. For the dash harness, I'd be trying to get my hands back on an EF harness.

It looks like someone went way over their head and did more than the necc. work to pull off something...not too sure why they would have...