Well if you want aluminum, you have to get the 22b fenders which Teague's can get you but cost somewhre around $2500 per fender. And they are wider like the 22b, obviously.
As far as getting either carbon or fiberglass. You can get a full 22b bodykit from Aerosimresearch.com They have had this kit in production since last June or so and seems to be quite nice. I was sent pics of the pieces by them selves and looks really good.
Also you can tell that they used real Subaru 22b parts to make thier molds. Which helps alot b\c tehn you know that the dimensions are exact or at least really close.
The entire kit in carbon goes for about the price of one authentic 22b fender, $2500.