9 To test the AMSOIL GT's new braking prowess, we headed back to Bradenton Motorsports Park. With the ability to rev the car higher on the starting line, our 60-foot times dropped from about 1.50-seconds to 1.45-seconds. Our e.t.'s also dropped to a new best of 9.84 at 139 mph. Not bad for a 3,800-pound street car!