Industrial Injection Dodge Phatshaft 64 Turbo For 03-04 5.9L Cummins 12cm Housing - 364240651AThe original PhatShaft is the perfect turbo for quick spool and low end performance. The Phat Shaft turbo also has the overall volume for overall torque for efficient full throttle power. The PhatShaft can be purchased with a 12 or 14 turbine housing matched with a 65mm turbine. We suggest a 12 cm turbine housing if the engine is a 12 Valve and has moderate fueling upgrades such as 300hp injectors and a camplate. If the engine has heavier fueling