The 1994-2002 Dodge Ram trucks with the potent 5.9L Cummins came factory equipped with a three inch turbo back aluminized exhaust with a resonator and muffler. While this system is reasonably adequate for stock to mildly powered trucks, a larger diameter system from Diamond Eye, Magnaflow, MBRP, Mel's Manufacturing, or Silverline is mandatory on any Cummins equipped with even mild upgrades, or for those towing heavy...