This is the Dr Diff cobra kit (13" rotor) with an 18x9. Just bolted it on, its an easy swap, but haven't driven the car yet. If you wanted opposed piston caliper you would need rotors with a deeper hat (more offset to the knuckle side). The wheels are Torque thrust M's, which are basically mustang wheels as well.

There are a lot of pads available for this application (94-04 Mustang Cobra). I also bought the rear kit (11.75 rear disk that is vented), but haven't started the install yet.