re serial numbers pterry mark the only real way to find out what options a has is to talk to the original owner however depending on the current condition of the car there are some indicators that can help look at the technical manual judging manual for specific indications if the tach is original it can tell you if you had the high or low hp options if there is a hole in the firewall just behind the distrubuter it could have been a hp fi car look for holes and nutplates in the fender wells for the fi air cleaner on the left side and for a washer vacuum take mount on the right side another indicator of a fi car check for an antenna mount hole on the left rear fender to see if it had a radio take a look at the clutch mount tower on the frame to see if it looks original helps tell if it was manual or pg there are lots of other indicators that you can check out using the judging manual keep checking and good luck pterry