Bbk Performance Headers - Tuned Length Shorty - 1.75 in Primary - Stock Collector Flange - Gaskets / Hardware Included - Steel - Metallic Ceramic - Ford Coyote - Ford Mustang 2011-14 - Pair-16320--Notes: 5.0L . CARB APPROVED C.A.R.B. number D-245-16 State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO