Inspection doesnt have much to do with your engine. Emissions does raise a problem though. If your obd1 like I think you are and switch to say obd2 you will fail emissions every single time. This is because when you bring in you car they will say ok its an obd1 car put do the test on a obd1 car and if you have a obd2 car it will fail. So make sure you get emissions done the day before you do the swap just to make sure.