Latemodel Restoration is your one stop shop for all Mustang torque box reinforcements and components! The Mustang Torque box is where your Mustang's lower control arm meets your Mustang's chassis. This becomes weak over time and begins to crack from the added stress at the track or "back roads". We have the heavy duty torque box kits you're looking for to eliminate any more damaged caused by this weak link! These kits weld in place for a permanent solution.