1963 Dodge Dart Ring and Pinion Set Chrysler 8.75 in. Rear - w/ 742 Case Housing - Ring and Pinion Set - 3.73 Ratio - 10 Spline Pinion - 1.750 in. Diameter Pinion Bearing Journal - Rear guaranteed to replace your current 1963 Dodge Dart Ring and Pinion Set Chrysler 8.75 in. Rear - w/ 742 Case Housing - Ring and Pinion Set - 3.73 Ratio - 10 Spline Pinion - 1.750 in. Diameter Pinion Bearing Journal - Rear. 1963 Dodge Dart Ring and Pinion Set comes new OEM 1963 Dodge Dart Ring and Pinion Set aftermarket new 1963 Dodge Dart Ring and Pinion Set of remanufactured 1963 Dodge Dart Ring and Pinion Set Chrysler 8.75 in. Rear - w/ 742 Case Housing - Ring and Pinion Set - 3.73 Ratio - 10 Spline Pinion - 1.750 in. Diameter Pinion Bearing Journal - Rear.