Does not match spare tire carriers on Ebay. If it was attached to an add-on/non original "angle iron" cross member, it's not original. Also depends on where under the bed. Front middle rear. And what direction the cut off was facing. Except for light construction as Martin said, I would have guessed trailer hitch. But the part has unique, era correct form.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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