Maybe nothing is wrong......its aftermarket meaning its probably stiffer than oem and might lessen the vibration with some drives. Its like solid motor mounts they will vibrate like a mofo but then when they brake in u will notice the changes. Im sure someone who has it will chime in im just getting the ball rolling
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.