5.4L V-8 engine Banks' 100% stainless TorqueTubes are virtually indestructible. Includes two full exhaust manifold assemblies, each with a seamless high-velocity collector. Unlike the restrictive stock setup, Banks TorqueTubes literally "pull" out the exhaust, unleashing greater torque and helping the intake stroke to draw in more air. The item "BANKS TORQUETUBE HEADERS 2004-08 FORD F150, MARK LT 5.4L V8" is in sale since Saturday, May 14, 2011. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Systems".The seller is "performancepartswarehouse" and is located in Torrance, California. This item can be shipped worldwide.