Dynatech SuperMAXX Stainless Steel Catted Mid Pipes are the perfect item to combine with your Dynatech SuperMAXX Headers for a complete bolt-on installation on your vehicle. Designed with performance in mind, these SuperMAX Intermediate pipes feature high flow metallic substrate catalytic converters. They outflow the OEM cats by a stunning 54% for greatly improved flow and more power. Designed with high quality "ball and socket" connections, this intermediate pipe will connect directly to your Dynatech SuperMAXX Long Tube Headers and then to your factory or aftermarket cat-back exhaust. The part number for this item is 722-84220 and it fits 1999-2003 Ford F-150 (5.4 V8 Models) with Dynatech SuperMAXX Long Tube Headers. Does not fit the Lightning.This item is not designed to bolt up to OEM Exhaust Manifolds, only Dynatech SuperMAXX Headers (Dynatech Header part 722-84210, which is sold separately).