Finding fairing for an 89 model?

Right I've got an old 2stroke 89 WR/YZ 250 sitting around and I need to get hold of a new rear fender for it due to being a nob and dropping it while trying to wheelie.

Actual rear fenders are rare as and i've had no luck with ebay or other aftermarket places.

Does anyone know of any good places I might be able to find myself another fender or if any of the newer fenders will fit onto the old frame? (probably with a bit of modifying).

Thanks in advance guys