you CAN put just about any ecu on any motor. Will it run good is a different story.
for the OP, just run the p28 if you're obd1 chassis. the p30 maps aren't remotely close for running a y8.
Other than the obvious different fuel, igntion, vtec, and redline, the only difference between the p28 and the p30 is that the p30 has a knock sensor circuitry.
other than that, they are pretty much the same thing... (usdm vs usdm of course)