I'm No body guy but if you do decide to repair them I would stop bye your local powder coat shop and try to score some iron phosphate easy to apply awesome rust pervention when used properly and easy process for the reward
A nut among the bolters sure ill like it quite well here.I enjoy the 60-66 "iron" I like the gmcs,chimys,chevys regardless these trucks rule! Mine 63 gmc fleetside long bed. Custom cab 3/4tfirst truck<being restored  62 chevy short bed fleetside 1/2t
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