Sold Out Quick view BMR Suspension BMR 79-04 Fox Mustang Torque Box Reinforcement Plate Kit(TBR005H And TBR003H) - Black Hammertone - TBR004H Compare $239.99 Increase stiffness and reinforce the torque boxed in your 1979-2004 Mustang with Torque Box Reinforcement Braces from BMR Suspension. The Fox-chassis Mustangs we not known for being super strong. When large amounts of torque are applied to the Fox... Currently Out of stock. On order! Currently Out of stock. On order!