FORD issued a recall on the MUSTANG model

On certain Mustang SVT vehicles, when operated in severe driving cycles such as frequent drag race type standing start acceleration, the ball joint in the rear suspension knuckle where the lower control arm attaches may be displaced longitudinally out of its installed position. If this occurs, the stress levels in the knuckle casting will increase and the casting may fracture. The corner of the vehicle will then drop and the lower control arm may contact the inside of the wheel, possibly affecting directional control. Correction: Dealers will install a revised rear suspension knuckle assembly with positive retention of the ball joint.