1968 Dodge Pick-up Truck Ring and Pinion Set D300 Pickup - 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 1968 Dodge Pick-up Truck Ring and Pinion Set D300 Pickup - 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. 1968 Dodge Pick-up Truck Ring and Pinion Set comes new OEM 1968 Dodge Pick-up Truck Ring and Pinion Set aftermarket new 1968 Dodge Pick-up Truck Ring and Pinion Set of remanufactured 1968 Dodge Pick-up Truck Ring and Pinion Set D300 Pickup - 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.