1981 Dodge Pick-up Truck Ring and Pinion Set W150 - 4WD - Chrysler 8.25 in./ C213 Rear - Ring and Pinion Set - 3.07 Ratio - Double Drilled - Rear guaranteed to replace your current 1981 Dodge Pick-up Truck Ring and Pinion Set W150 - 4WD - Chrysler 8.25 in./ C213 Rear - Ring and Pinion Set - 3.07 Ratio - Double Drilled - Rear. 1981 Dodge Pick-up Truck Ring and Pinion Set comes new OEM 1981 Dodge Pick-up Truck Ring and Pinion Set aftermarket new 1981 Dodge Pick-up Truck Ring and Pinion Set of remanufactured 1981 Dodge Pick-up Truck Ring and Pinion Set W150 - 4WD - Chrysler 8.25 in./ C213 Rear - Ring and Pinion Set - 3.07 Ratio - Double Drilled - Rear.