I was thinking about trying to make a Carbon Fiber airbox. I dont know a lot about Carbon Fiber, but i think its possible to make a cardboard airbox, and then line the inside with Carbon Fiber Weave Cloth Fabric, then brush on the Resins to harden up the carbon fiber, then rip of the cardboard and cover the outside with more Carbon Fiber Weave Cloth Fabric and harden it with resin. I also guess its possible to glue aluminium between the 2 layers of Carbon Fiber for mounting points and strength.
Just another dumb idea of mine! lol