Its a custom setup, I'm using a Wilwood two piece rotor with an aluminum hat. The hat fits on the stock hub, but it needs a small centric ring so the rotor will be centerer on the hub. My setup would roughly cost about $800, the main the that costs alot is the fabfrication of the bracket that allows me to use a Wilwood 4 piston caliper.
This setup stops in a real hurry and lets you brake WAY late...
http://www.geocities.com/svt_mondeo/video.html Check out my "traffic" video, I was able to pass quite a few cars and brake alot later than anyone else...