Currie's own RockJock® 44 housings feature 100% new ductile iron castings that are higher ground clearance than a traditional 44 and feature extra material in critical areas and improved oiling ports. All of our RockJock® 44 housings feature new 3"x.375" wall tubes and large bearing 9" Ford style housing ends. This allows the use of positively retained, bolt-in style 9" Ford axles which provide a far larger axle bearing and opens up available brake offerings to anything that is available for a 9" Ford.