BDoug Thorley Headers THY-630Y-C Exhaust Header for Jeep Grand Cherokee ZJ V8 ReviewbP PP Doug Thorley Headers THY-630Y-C Exhaust Header for Jeep Grand Cherokee ZJ V8 PMade in the USA with limited lifetime warrantyPExtra thick 14GA tubing and 38 inch thick flangesPCeramic coated inside and outPKit includes all required gaskets andor installation hardwarePCARB approved, 50 state smog legalP