you can have the distributor rewired for obd1 it is a pain in the ass to do but it is possible just gotta get the plugs. I recommend just swapping the injector clips as well they wire up color for color not hard to do at all if you don't wanna swap injectors out. Alternator will also need to be swapped for obd1 or obd2 different plugs on it.
honestly if you want clean and to not cut up your harness get the obd1 injectors, distributor, and alternator.