I have for sale a used, solid, fiberglass Bultaco Metisse gas tank with cap. You can see from the pictures that the gelcoat exhibits some cracks that will require attention. The tank is otherwise solid, with the cracks being only surface blemishes; not structural.
The seat pan is likewise a solid piece, however, sometime in its history someone decided to glass the rear fender to the seat pan, making it one piece. If you can work at all with fiberglass, undoing that should not be a big challenge; maybe just a bit time consuming.
The seat itself is toast, however, I figure the material present might be good for making patterns to have a new seat cover stitched up. There is of course also the seat base, which shows the same gelcoat cracks as the tank.
Please view the pictures carefully, they tell the story better than I can (the last picture does not represent part of the offering).
Shipping to lower 48 states only.