BBK 96-04 Mustang 4.6 GT / Cobra Short Mid H Pipe w Catalytic Converters 2-1/2 For Long Tube HeadersBBK Performance short mid H pipes with high flow catalytic converters are specifically designed to be used with BBK full Length exhaust headers to complete the exhaust installation to your cars cat back exhaust system. This BBK mid pipe is designed and built with 2 1 2" CNC mandrel bent stainless tubing for maximum exhaust flow and high flow catalytic converters. All BBK mid pipes feature ball and socket style connectors for simple installation and