1971 Ford E Series Van Differential Carrier E-300 Econoline - Dana 60 - Yukon Grizzly Locker - 30 Spline - 4.56 And Up - w/ Full Float Axle - Rear guaranteed to replace your current 1971 Ford E Series Van Differential Carrier E-300 Econoline - Dana 60 - Yukon Grizzly Locker - 30 Spline - 4.56 And Up - w/ Full Float Axle - Rear. 1971 Ford E Series Van Differential Carrier comes new OEM 1971 Ford E Series Van Differential Carrier aftermarket new 1971 Ford E Series Van Differential Carrier of remanufactured 1971 Ford E Series Van Differential Carrier E-300 Econoline - Dana 60 - Yukon Grizzly Locker - 30 Spline - 4.56 And Up - w/ Full Float Axle - Rear.