Bbk Performance Headers - Tuned Length Shorty - 1.625 in Primary - Stock Collector Flange - Gaskets / Hardware Included - Steel - Titanium - Ford V6 - Ford Mustang 2011-17 - Pair-1442--Notes: CARB APPROVED C.A.R.B. number D-245-16 State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO