I would never recommend running stock pads on a GT (even the brembo gt). I have about 70 horsepower less than a base GT, Brembos from a wrecked Boss, I weigh less than 3500 pounds with a full tank and driver, and I did four laps of NCCAR before the stock pads were on the backing plates. I daily on my carbotechs, they are a bit noisy, very dusty, and below about sixty mph, you really have to push the brake pedal (not very grabby without enough heat).
2014 Mustang V6-Built to run TTB, CAM-C, and ESP
Proving to my fellow racers that the disdain that some GT drivers have for V6 drivers is unfounded, one results archive at a time since 2013.