1974 Ford F Series Trucks Ring and Pinion Set F-250 - 4WD - Dana 60 - High Performance Replacement - 5.38 Gear Ratio - Thick - Rear guaranteed to replace your current 1974 Ford F Series Trucks Ring and Pinion Set F-250 - 4WD - Dana 60 - High Performance Replacement - 5.38 Gear Ratio - Thick - Rear. 1974 Ford F Series Trucks Ring and Pinion Set comes new OEM 1974 Ford F Series Trucks Ring and Pinion Set aftermarket new 1974 Ford F Series Trucks Ring and Pinion Set of remanufactured 1974 Ford F Series Trucks Ring and Pinion Set F-250 - 4WD - Dana 60 - High Performance Replacement - 5.38 Gear Ratio - Thick - Rear.