Yes....
-DST built one A/FX Mustang (true) the rest were built at HM Charlotte (agreed, but I was talking primarily about Mavericks, not Stangs). One must keep in mind the long passage of time as the 1970's Mavericks came WAY after the earlier Cammer equipped, first on gas then later on nitro race cars.
And yes Logghe built F/C's (Schartman, Nicholson, et al) as they later became known, for factory Ford racers and even dragsters for Kalitta and even their own "in-house" Cammer-equipped F.E.D. dragster run solely in the MI area ("Prussian" driver Maynard Rupp).
My Ford folks at the time would have disputed the 9 Maverick "bodies built and supplied".
No doubt Ford supplied bodies-in-white to named racers yet these were not race cars, not even close. All the chassis and rollbar additions were made elsewhere, often by the racers themselves (Ed Schartman in particular, in his own garage). As your own statement makes clear, Earl W (my bad, not Kaase as I erroneously stated) did help 'build' Dyno's Mav....as often noted in NHRA lore, Don did so in a mere 7 days after NHRA announced the "Pro Stock" class that would be 1st run at the Winternationals.