I'm sure there would be tonnes of parts that people on here would want recreated in carbon fibre and a group buy could easily be organised. My friends on the supra forums always get together and get carbon fibre parts made in a large order (currently my friend is doing one for a supra dash).
Unfortunately as Blitz has said, people aren't allowed to advertise stuff if they aren't a trader, which puts this in a bit of a hard situation to organise.