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Stub Shaft Length

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Here's the first sign of swap trouble: '69-'72 Dana 44s (right) use smaller U-joints than the '73-'78s (earlier 1.063-inch-diameter caps; later 1.188-inch). Also note the difference in stub-shaft length and in the size of spindle shoulders (arrows). Spicer doesn't make an axle U-joint with two different cap sizes, and no one we talked with thought it was a good idea to use such a U-joint, even if it could be found or custom made.