Flanged 31 spline axle axles have 3.15" bearings installed. axle housing only is 51" wide from housing end to housing end without axles. axles have three bolt patterns in all axles, 5 x 4.5" small ford, 5 x 4.75" GM and 5 x 5".
1935-48 Fat Ford 9 Inch 56" HD New Smooth Back Rear End Housing Kit with 31spl
Ford 9 inch 56" HD New Smooth Back Rear End Housing Kit with 28 spline axles hdw
56" Centered Pinion Ford 9 Inch Hump Back Housing with Big Ford New Style Ends
56" Centered Housing Ford 9 Inch Hump Back Housing with New Style Big Ford Ends
56" Track Width Small Web Round Back Ford 9 inch Housing with Big Ford Ends
56" Centered Housing Ford 9 Inch Hump Back Kit with 28 spline axles & hdw
