1972 Ford E Series Van Ring and Pinion Set E-200 Econoline - Ford 9 in. - Ring and Pinion Set - 3.70 Ratio - 28 Spline Pinion - Rear guaranteed to replace your current 1972 Ford E Series Van Ring and Pinion Set E-200 Econoline - Ford 9 in. - Ring and Pinion Set - 3.70 Ratio - 28 Spline Pinion - Rear. 1972 Ford E Series Van Ring and Pinion Set comes new OEM 1972 Ford E Series Van Ring and Pinion Set aftermarket new 1972 Ford E Series Van Ring and Pinion Set of remanufactured 1972 Ford E Series Van Ring and Pinion Set E-200 Econoline - Ford 9 in. - Ring and Pinion Set - 3.70 Ratio - 28 Spline Pinion - Rear.