Also, you can cut the obd2a harness and put the obd1 dizzy on, but ONLY if you're using an obd1 or older ECU. You must always heed the Honda distributor code:
You HAVE to use the SAME YEAR or NEWER distributor as your ecu. Period. End of story.
You can use any ecu with an obd2b distributor.
You can use an obd0, obd1, or obd2a ecu with an obd2a distributor.
You can use an obd0 or obd1 ecu with an obd1 distributor.
You can only use an obd0 ecu with an obd0 distributor.
Why this is, I do not know. All the wires are there, so you can switch the plugs on an obd2b distributor to obd1 plugs without any problems (the wires are the same color regardless of year/obd)...
Feel free to PM me with questions.