The D60 yoke is the same series as the 1/2 ton D44...This or the U-joint should break before anything else does.......
Therefore....I think that would be the first place to start. The only problem is you've now made the weak link in the drivetrain a bit more expensive!!!!! I believe that the drivetrain should be bullet proof from front to back....BUT, that tends to get expensive!
A........
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