I am not sure of the exact year but if you can find a later axle it should have heavier duty inner axle shafts than the early '70s. This is only helpful if you find a D44. You can tell because your stock ones (If they are original) will taper up to the splines. The later heavy duty axles are a lot thicker and taper down to the splines. These are direct replacements.
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'70 K-20 San Diego, CA
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