Kooks Custom Headers - 09-10 Charger/09-10 Challenger - 5.7L HEMI Exhaust Headers & Cat-Back System This is for the complete Header and Catted Connection Pipe Exhaust System. Designed to bolt up to the factory exhaust system, this system comes with a lifetime warantee and a 2 Year warantee on the catalytic converters. Made out of 304 Grade Stainless Steel.