ive seen a little bit about fiberglass bonnets around the forum, how much would it cost if i wanted one and where abouts would i go to find one?

there was one listed about 5 times on Poobay a while back.
Nobody ever bought it as far as I know.
Think it was up for £125.

Thats the only one ive ever seen personally.

Nev driftmoto used to make them.

I have one on mine that i bought from Nev at Drift moto
Adam