If in good condition at a negotiable $5K that could be a real deal... If the boat came from the PNW I'm pretty confidant that we're talking about the same boat.
Google "SUN 838" or "Sunstar 28" and you should get a few more pics to compare.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)