1 EA J427GP-350 Front Coilover Kit
race and off-road applications
SCCA and many other racing organizations
Vorshlag upper spring perches are included and built to fit the strut style and spring diameter you select
The rebound valving has a progressive curve that is strictly determined via orifice control
1-7/8" Stainless Headers & Comp. Only Conn. Kit. 2015-2023 Mustang GT 5.0L. 2001 Pontiac Firebird 1 EA J427GP-350 Front CoiloverKooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud