tenzoracerevovii: The hood is definitely gonna be carbon fiber. I've bought one to scale sheet (1/24) for the hood and spoiler. I'm also going to go buy another one for the front skirt and the two underbody panel thingy's that deal with air flow under the body.
As for the spoiler, I imagine that it will be a combination of the modified stock one, Evergreen modelling sheets and putty.
flyonthewall: That sounds sweet. I might order them from you, but that's a long way down the road yet.