1984 na edu problem

I picked up an 84 na basket case as a parts car. I wanted to get it running to see what was good and what was bad.

After getting it to start, and run poorly, and spending hours cleaning connectors and testing sensors, I put a spare ecu in it. Miraculously, it starts and runs very well.

problem is, the ecu that runs good is an 88 na federal. I think there may be an incompatibility with the 84 o2 sensor, and the 84 injectors.

I'd like to drive it while I build my real car, so I need to source an ecu. Any advice? Rock auto has an a1 cardone remanufactured for 200$. Anyone use one of these and have good or bad results to report? Is there a better source?