2203CM - 1993-2002 GM F-Body Tunnel Brace Mounted Torque Arm - Long Tube HeaderRear torque arm hardware kit We highly recommend purchasing a new hardware kit if running this torque arm on a factory rear end, Strange or other similar rear ends that use a straight through long bolt design. Factory torque arm bolts will work however are slightly too short and may not work correctly. For Moser Engineering 12 Bolt rear end use P N 2998, the Moser 12 Bolt uses four bolts, P N 2998 includes longer bolts and spacers to reduce movement.