Found os-db right after I found this site. That's where I figured out that it is probably an '83. Sorry about the double post of the picture, can't seem to edit my own post and fix it. Here's the 3rd pic that I meant to post.

If the weather is nice here in PDX tomorrow I'm going to strip it and inventory what parts can be re-used and what needs replacing. It's my understanding that this isn't a very valuable model so I don't plan on doing a 100% period correct restoration. Just want to make it a good cruiser for my son.