1970 Ford F Series Trucks Ring and Pinion Set F-350 - Dana 70 Rear - Ring and Pinion Set - 4.88 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 4 Series 4.56 & Up Carrier - Rear guaranteed to replace your current 1970 Ford F Series Trucks Ring and Pinion Set F-350 - Dana 70 Rear - Ring and Pinion Set - 4.88 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 4 Series 4.56 & Up Carrier - Rear. 1970 Ford F Series Trucks Ring and Pinion Set comes new OEM 1970 Ford F Series Trucks Ring and Pinion Set aftermarket new 1970 Ford F Series Trucks Ring and Pinion Set of remanufactured 1970 Ford F Series Trucks Ring and Pinion Set F-350 - Dana 70 Rear - Ring and Pinion Set - 4.88 Ratio - 5/8 in. Offset - 29 Spline Pinion - Fits 4 Series 4.56 & Up Carrier - Rear.