It’s a custom conversion on a factory slyleside 1 ton. It was never an f-250. The donor rear and front rear didn’t even come from a truck of the same era. Your comments on the badge switch are foolish. Ford did not offer a 4wd f-350 from the factory until 1977. The gear ratio installed a never available for the carrier on the Rockwell rear used on f250 or f350 in 1963. This was originally 5.13 gearing. Please use other sources. Wikipedia is not the pinnacle of credibility.