Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 414 Pontiac 50-inch tailpipes clear the factory

50-inch tailpipes clear the factory spare tire and give you two choices of exit locations

Factory low mounted LS A/C needs relocated when running a UMI tubular k-member

ACT's Xtreme pressure plates increase clamp load by 50 to 120 percent

Worn pilot bearings cause rough shifting

These direct bolt-on replacements are designed to minimize wheel hop and improve cornering

Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 414 Pontiac 50-inch tailpipes clear the factoryPROFORM 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