I had the same brakes on my 94 Cobra, they are truly amazing brakes and that was on a 3500lb. car. The OEM rotors and calipers were made by Brembo, 13in. vented front and 11.65" (I believe) rear rotors. Honestly that will be overkill, after tracking my MSP 4 times now with stock calipers, ceramic pads and stainless braided lines I have had no issues with brake fade and the car will throw me forward in my seat. The car stops fine I really don't see the necessity for a heavy brake setup like that.
Drive a Mustang GT on track for 20 minutes at 8/10ths and you will experience a car in need of a brake upgrade.