93-97 CAMARO FIREBIRD LT1 3.5" OBX RACE EXHAUST HEADER Like all OBX header systems, this too is backed by OBX's limited lifetime warranty program against manufacturing defects. This header is not CARB legal and is for off road use only. Due to the long tube design for maximum horsepower, this header will eliminate stock catalyst converter. Header is intended to be private road use only.