1971 GMC Suburban Differential Carrier K25/K2500 Suburban - Dana 60 - Yukon Grizzly Locker - Aftermarket 40 Spline - 4.56 And Up - w/ Full Float Axle - Rear guaranteed to replace your current 1971 GMC Suburban Differential Carrier K25/K2500 Suburban - Dana 60 - Yukon Grizzly Locker - Aftermarket 40 Spline - 4.56 And Up - w/ Full Float Axle - Rear. 1971 GMC Suburban Differential Carrier comes new OEM 1971 GMC Suburban Differential Carrier aftermarket new 1971 GMC Suburban Differential Carrier of remanufactured 1971 GMC Suburban Differential Carrier K25/K2500 Suburban - Dana 60 - Yukon Grizzly Locker - Aftermarket 40 Spline - 4.56 And Up - w/ Full Float Axle - Rear.