dooood.....
why not just spend like an extra 100 bucks and get an obd2 LS....shit even an obd1 is better than the obd0.
It's gonna cost you a lot more trying to get that damn thing to run. I'd convert that engine to obd2 spec (sensors, throttle body, intake manifold, distributor, injectors) and use your DX harness.
you'll also need a hydro transmission, clutch, flywheel, shiftlinkage, axles, and a WHOLE BUNCHa shit.