These brakes work great! During the first test, they brake gently. So smooth you can hear the rotors and pads touching. My pads are the best in the Autozone pad line. Nothing special, but brakes on a dime. The thickness of these rotors on a 1997 Cobra Mustang is .071. The factory rotors are .070, which doesn't really matter if you're installing them with pads. It was difficult to fit the rear rotors and pads, but the pads had to be modified by sanding the back of the pad. The front pads and rotors went in smoothly with no issues. Also, I would advise anyone to buy these pads, although I've had some minor issues with the rear pads and rotors. For the price and the look of these rotors I would buy them again.