OBX Performance Exhaust Header GM 04-07 CADILLAC CTSV LS6 LS2 5.7L 6.0L Full Length High quality T-304 stainless steel Backed by Limited Lifetime warranty from manufacturer defects OBX Genuine Products Design and Quality of OBX U.S.A Value Added Direct Bolt on/ Weld on Set Up with Gaskets & Hardware included as shown Precision Computer CNC machined flanges with DUAL-TIG welded construction