take a flashlight and look down behind the alternator. between it and the passanger side valve cover there is a flat machines pad on the engine block. that should have the engine id stamped onto it. you may have to wipe it down if its oily. you can also look on the driver side behind the valve cover where the engine and trans bolt together there is a casting number there but a little harder to see with the engine in the car as the firewall and master cylinder is usually in the way to see it. nice car by the way it looks like a nice project