I've been talking to Racing Brake about their kits and they are willing to put together a kit similar to the posted link below for about $1500. From what I gather, they are also willing to put together a Drag Racing kit with a 12" rotor (300 mm) to compete against the Aerospace brake kit.
Big Brake Kit (4-pot) - MK5/6 04-11 / A3 06-11 FRONT
- 2 Two-piece center-mount rotors - 330 mm - 13"
- 2 4-Piston calipers (RB4045)
- 2 Aluminum adapters made of 7075-T6 Alloy (stronger and stiffer than 6061-T6)
- 1 Set of RB ET300 brake pads (PD647-33)