Lo all,
Had a quick look on the net last night and found this company,
http://www.aerodynamix.co.uk/index.html
that make various aeroscreens in carbon fibre and GRP.
I emailed them last night to see if they fit the Haynes. The reply said they have supplied some to Haynes builds and haven't had any problems..
They certainly look good and also make other carbon parts...
Johno