1977 Dodge Pick-up Truck Differential Carrier W300 - 4WD - Yukon Dura Grip - Dana 60 - 35 spline - Front - Positraction - 4.56 and Up Ratio's - 4 Pinion Design - Front guaranteed to replace your current 1977 Dodge Pick-up Truck Differential Carrier W300 - 4WD - Yukon Dura Grip - Dana 60 - 35 spline - Front - Positraction - 4.56 and Up Ratio's - 4 Pinion Design - Front. 1977 Dodge Pick-up Truck Differential Carrier comes new OEM 1977 Dodge Pick-up Truck Differential Carrier aftermarket new 1977 Dodge Pick-up Truck Differential Carrier of remanufactured 1977 Dodge Pick-up Truck Differential Carrier W300 - 4WD - Yukon Dura Grip - Dana 60 - 35 spline - Front - Positraction - 4.56 and Up Ratio's - 4 Pinion Design - Front.