UMI Performance 1982-2002 GM F-Body Rear Torque Arm Hardware Kit 31015BL 437" diameter shims of various

437" diameter shims of various thickness

Replaces SP128LM

pre wire plugs for the headlights and dimmer switch

Tru-BoostX

UMI Performance 1982-2002 GM F-Body Rear Torque Arm Hardware Kit 31015BL 437" diameter shims of variousUMIs Grade 8 bolt upgrade kit is recommended when installing an aftermarket torque arm on the factory rear end and all similar rear housings that use the long through bolt design. Supplied with the kit are longer 9 16" Grade 8 bolts which accommodate the thicker torque arm mounting plates. Factory bolts will work with aftermarket torque arms however they may not have adequate amount of threads which could lead to failure and be unsafe. Note: This kit