From what I can remember the P/N's you listed are the same as the last ones I installed on a TF truck. If the wheel cylinder castings are substantially longer they may cause other problems as well. There seems to be a lot of variations in the offshore parts that are available lately. I certainly don't advocate doing any dangerous modifications. Of the thousand or so brake jobs I have done I have found some real messes inside when the drums were removed. However, most users of Bendix brakes including Ford did not have the "safety" brackets as part of their backing plates. I never encountered any issues as a result of not having them.
Fred
