Dynacorn also offers 55-59 and 67-72 cabs as well as various complete convertible bodies, a lot of their business is to the muscle car folks, including Ford - sheet metal pieces are stamped in Taiwan to specs licensed from GM and Ford [I think for you AD folks all they had to work with were some NOS or good originals

], and are the parts listed at most of the vendors, like the complete floors, roofs, firewalls, etc - if they get a cab order they have all the individual pieces in stock to assemble it for you
Bill