Does not fit stock driveshafts. 1310 Series Slip Yoke Spline/Hole Outside Diameter = 1.377 Number of Splines = 30/32 Series = 1310 Lock up style = OUTSIDE Universal Joint Width = 3.219 D - Universal Joint Bore = 1.062 J - Center of u-joint bore to End of Slip yoke = 6.102 R - Barrel Outside Diameter = 1.731 Counterbore Diameter = 1.387 Counterbore Depth = 0.394 Special Notes: Counterbore at hub end