its seems everyone here is confused
Let me be the first to congradulate you on the easiest install you will ever do, get the swap complete engine, ecu dizzy everything together, and just drop it in, integras are diffrent from hondas, all integra engine harnesses are really obd1 but they moved 2 or three wires, its so easy its scary, i did my 98 gsr in my car everything pluged in, i even used my obd2 gsr dizzy and injectors, just dont remove nothing just drop it in and once installed you will need to wire up the secoundarys in the tb, and move the knock sensor wire on the drivers strut tower its easy to repin, and run wires for vtec if your civic doesnt have vtec! good luck if ya wanna see pics let me know! ive done this swap, and i was so confused like you are, but in reality its as easy as dropping an obd1 gsr engine in.. Remember DONT FIX WHAT ISNT BROKEN LOL and all you will need to find is a obd1 gsr ecu