When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Ford stopped the unibodies in '63 and only started making the crew cabs in house in '65. Not to say for certain what those old conversion companies brewed up for the railroads, or to say what talented fabricators have built in their garages. I'd be interested to see pictures of one.