Alright so I bought a 92-95, obd1 B18a1. I have a B16a2 wiring harness, and p2t ecu. The engine came with a Intake manifold, So Im assuming its a obd1. I also have a Supposed obd1 Dizzy ( it has 2 connectors on it ). Here is where the headaches starts...
The wiring harness has 3 ecu plugs ( blue, gray, green ) and only 2 fit the ecu ( blue, Gray ).
The dizzy does not fit all 3 bolt holes on the Head, only 2 bolt holes match up and the dizzy is upside down when it does.
Starting to think I might have a obd2 engine with a obd1 valve cover, thus making sense of why the dizzy ( with 2 connectors, trademarks of obd1 ) will not fit right.
Very confused on how to get, or even IF I can get these to mesh and run well, Ive been told just get a obd2 intake manifold, and a obd2 dizzy, and leave the green plug not connected, and itd run just fine...? Fast and usefull help would be VERY much appreciated! Thanks.

 

That ecu is an obd2b VTEC ecu... Your car is obd1, the motor is obd1, and your harness should be obd1....So your first problem is the ecu...In my opinion You should give your car a break for a little bit and just go on here and read, read, and read some more. This forum has a plethora of information. I have not had one question yet about my car that has not been answered by a previous thread on this forum.

So for starters you want a p75 ecu.

 

you have a 99-00 si ecu. pic of distributor? any lettering on it? what did the harness come out of?