Thanks for posting. You are correct, your coupe is #18 of 2,234 North American 968 coupes.
A few other facts about your car:
It was the first cobalt NA 968 coupe (of the 31 produced)
You also have a special interior. MX is full leather seats in classic grey. The partial leather is what you see more often, the full leather seats are much rarer and your car is 1 of 12 with Full leather seats in classic grey. They cost $1,949 in 1992.
Your other factory options are the cup1 17" wheels (code 403) and the single in-dash CD with hi-fi sound speakers and amps (code 691/490/494)
Very cool 968
Thanks for the info