What is it worth?

I have a Canadian customer who is in Atlanta for the winter who wants to sell his 40. It is a 79 BJ 40 converted to a 350. Nice conversion with no real issues. Starts, stops, runs fine and strong. Knuckles leaking, manual steering, nasty tie rod ends, no major leaks, slightly higher suspension but all parts in good shape. Surface rust on the frame, at times severe but at no point does it need frame work. All it needs is a wire brush and paint. He just drove it from North Ontario to Miami and back to Atlanta.
Here is the kicker:
It is almost all fiberglass. Tub is Gozzard, both fenders are Gozzard as are the aprons. The bib is Gozzard, The bezel is Gozzard, even the running boards and hood are Gozzard. I have seen it before but never to this extent. This is nice. The hardtop is rust free from Fla. The ambi doors and pass doors are rust free from AZ. All painted. It looks great and drives great. Nce new seats. Everything works with Aftm gages as well as stock.
No dents,dings or cracks in the tub. freash apint on the tub and roof. Doors are same colour but older paint. Looks great.

I cant really value this as I am not familiar with the value of a Gozzard conversion. Any ideas?