Moser 9" Ford Nodular Iron cases are the toughest on the planet. Moser Nodular Iron Cases are available in two bearing sizes. The 3.062 side bearing size is made for posi-traction setups or spools with fewer than 35 splines, and the 3.250 side bearing size is made for use with 35 spline and 40 spline spools. There are a number of features that make our Moser case the right case for you. All Moser cases are heat-treated and stress relieved before all CNC machining is completed. In addition, Moser cases have forged steel caps with 5/8 bolts, machined adjusters, and are tapped for an oil filler plug. SAME DAY SHIPPING (if ordered before 2 p.m. est)