if u use the obd2 dizzy all u have to do is change the plugs and it will work.. thats how mine is right now.. obd2 dizzy on obd1
the bolts will line up but he was talking about the plugs OBDII and I are not interchangeable you can cut the harness or get a jumper harness unless you are using a OBDI engine harness then you will be fine.