^AP racing stuff i believe on the FRP
the carbon/carbon discs are expensive, the calipers aren't that bad
i would of thought they would be Alcon, seeing as thats what ford mainly use.
Powerstation do a Porsche 6 pot conversion for the impreza, so its do-able.
Just find the calliper, get someone to machine you the plates, if they will work with standard discs then fine, if not get a two peice disc made up, job done.
Probably best part of 600 quid for brackets and discs.
OR
Buy something like our compbrake kit, and for a fiver i will stencil any name you want under the sun onto them!