Mike,

Flounder Bay Boat Lumber in Anacortes should be able to supply you with chines, transom, and any other pieces you need. Also, I think you might be able to glass the outside bottom of the boat if that 1/2" ply is in good condition provided you don't glass it also on the inside, which would seal in moisture. Talk to the folks at FBBL; they're real knowledgable and helpful with restoration projects.

Sincerely,

Salmo g.