In other words, if you're buying it for the front axle, don't bother.from pirate4x4 dana 60 bible
The undesirable front Dana 60 axles will not be covered by this article, and include:
74-75.5 Ford low pinion drivers side closed knuckle drum brake with 30 spline inners, 19 spline outers, small ujoints and weak knuckles.
75.5-77 Ford low pinion drivers side open knuckle disc brake 30 spline inners, 19 spline outers, outer knuckle spindle pilot hole is smaller than 78+ axle and is therefore notched to allow 1480 series U-joint tp pass through.