Got answer from Matt, it's a 1981.
The hull #'s are as follows:
Left ::FMSBO188 M81L-17P185
Right:FMSBO188 M81L17S184
The M81xxxP is port, M81xxxS i...
a few people have told me that the last 2 digits are the build year. The boat has a sliding traveler not the cable style so i'm thinking it might be a...