crx88fast

Ok so i will start at the beginning, I found a del sol on craigslist. When i got to the car i started it and it sounded great, popped the hood and the car has a b18c1 in it. so i got it for a really great deal of $1500. once i started working on it to get the drivers side window rolled up i realized that all the window switches are hard wired in. Then pulled the shoved in integra gauge cluster out and saw several wires running various places. Then realized the tail lights were also directly wired. So my guess is that they swapped in all the integra wiring and thats why nothing matches up. The engine runs great and the body isnt that bad but the wiring is a nightmare or so i think. Plus they have even gone around the stock fuel pump or something and im guessing put in something from the integra? So i dont know what to do from here. Is it better to just pull the motor and put it in something else? Is there a way to make this harness work with the body?

Oh and i ordered the del sol cluster and when i put it in and plug it in the car doesnt start. Is there a safety switch on the del sol cluster? I really like the car so if anyone could lend some help i would appreciate it.