1971 Ford F Series Trucks Ring and Pinion Set F-100 - RWD - Dana 60 - Standard Rotation - Ring and Pinion Set - 6.17 Ratio - Fits 4 Series Carrier - Rear guaranteed to replace your current 1971 Ford F Series Trucks Ring and Pinion Set F-100 - RWD - Dana 60 - Standard Rotation - Ring and Pinion Set - 6.17 Ratio - Fits 4 Series Carrier - Rear. 1971 Ford F Series Trucks Ring and Pinion Set comes new OEM 1971 Ford F Series Trucks Ring and Pinion Set aftermarket new 1971 Ford F Series Trucks Ring and Pinion Set of remanufactured 1971 Ford F Series Trucks Ring and Pinion Set F-100 - RWD - Dana 60 - Standard Rotation - Ring and Pinion Set - 6.17 Ratio - Fits 4 Series Carrier - Rear.