1975 Chevrolet G20 Differential Carrier RWD - Yukon Dura Grip Positraction / Limited Slip - GM 8.5 in. Rear - 28 Spline - 2.73 And Up - 1.781 in. Bearing Journal - Rear guaranteed to replace your current 1975 Chevrolet G20 Differential Carrier RWD - Yukon Dura Grip Positraction / Limited Slip - GM 8.5 in. Rear - 28 Spline - 2.73 And Up - 1.781 in. Bearing Journal - Rear. 1975 Chevrolet G20 Differential Carrier comes new OEM 1975 Chevrolet G20 Differential Carrier aftermarket new 1975 Chevrolet G20 Differential Carrier of remanufactured 1975 Chevrolet G20 Differential Carrier RWD - Yukon Dura Grip Positraction / Limited Slip - GM 8.5 in. Rear - 28 Spline - 2.73 And Up - 1.781 in. Bearing Journal - Rear.