These replacement inserts can be purchased. It is a cut and weld operation from there. Are the cab door bolster areas sound? Here is where things get touchy, will it last, repair options critical to ownership smiles. Usually the rust is cancerous spreading throuout the near area as much as a foot away from obvious ground zero. Possibly the floor panel needs repairs also. It has also been true, somewhat, the higher up the ruck sets the less rust problems in these areas.
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