MBRP 1999-2003 Ford F-250/350 7.3L 4 Down PipeMBRP 1999 2003 Ford F 250 350 7. 3L 4 Down Pipe Some folks are just not satisfied with the usual. They have to always be pushing the limits; refining and adjusting; until they have the truck that has no limits. We have put together some components that will take you to the next level. The fastest path from the turbo to the tip is through an MBRP down pipe. Bulking up exhaust flow. Armor Lite Turbocharger Down Pipe; 4 in. Diameter; Mandrel Bent;