Flanged 31 spline axle axles have 3.15" bearings installed. axles have three bolt patterns in all axles, 5 x 4.5" small ford, 5 x 4.75" GM and 5 x 5". axles are cut to length to match the housing. housing ends are New Style big ford with. 375" (3/8") bolt holes, refer to housing end drawing in Pictures.
