Had a chance to look in the bluebook, which only went back to 1979. The '79 model had a low trade in value of $180 and a high end at $320. I tell customers if you want to sell it yourself start off at 50% over high end if it is in good condition. Hope this helps.
Thank you so much! At least now I have a "jumping off" point. Funny, this fella didn't even try to start it and didn't care if it started. I would imagine this means he plans to sell it off for parts?
I really appreciate everyone helping me out here. Thanks again!