Kooks 11-14 Ford Shelby GT500 5.4L / 5.8L 4V 1 7/8in x 3in SS Header w/1pr 12in 02 Ext Harn. 

• 1 7/8" x 3" Stainless Steel Long Tube Headers
• Must be used with Kooks X-Pipe or H-Pipe
• O2 extensions, gaskets, and all installation hardware included
• These products are NOT legal for sale, installation, or use on a licensed vehicle in the state of California, and they do NOT meet CARB compliance