one is to get a b18a obd0 distributor and use that...along with that ecu.
also, i question whether you have a b18b or b18a? do you have a hydro or cable transmission with that motor swap?
you could also get a wiring conversion harness and just use the obd1 ecu, obd1 distributor, etc.
do whatever is cheaper, figure on the difference in cost between the two options i've mentioned...then make a decision...also, make sure you have a cable transmission for that swap. seems like you should, but i thought only b18a's came with cable transmissions, while b18b's came with hydro's...am i right?..i'm too lazy to check my own notes.