Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413PROFORM Wedge Locking Header Bolts ELIMINATE the need to constantly re tighten collector bolts, and without the need for clips, pins, racing wire, chemicals or gunk. The secret is in the Wedge Locking Washer's super hardened external teeth that "bite" into the bottom of the bolt head and the top flange surface. Vibrations that normally cause other bolts to loosen, are blocked by the wedge locking action that uses tension, instead of friction to stay

AB4450-2 - 1964-1966 GM A-Body Shock/Spring Lowering Kit

The spring allows the clamps to adjust to provide even tension

They feature 4-layer dimpled Aluminum Material

and some late models)

kit is for one upper control arm

low-pressure gas design with internal rebound adjustability

Large sway bars place a lot of stress on their mounting points and mounting brackets causing them to flex

The system includes all necessary parts

Manley Severe Duty® Valves deliver the ultimate in strength

minimizing differential movement by replacing the soft rubber OE bushings with solid two-piece poly bushings

Shims may still be required on some applications

The factory stamped brackets are weak and susceptible to breaking and corrosion on the 1993-2002 F-Body