I just happen to be currently working on a 28 Phaeton and am in the process of fitting the doors. This is a basket case that is being brought back from the grave. These parts came from Montana, and so it probably is safe to say that it is an American Ford. Dave from Australia probably answered the question. If Australian Phaetons had wood sub frames, then Randy's examples probably came from an Australian Phaeton. I have no way of knowing this for sure, but Randy's B pillars are a different animal from what I have here. Hope this helps
BTW. Fitting 4 doors to a body assembly that had been completely apart is very difficult. It's coming along slowly, but to all the Ford Barn guys who have been through this, "I feel your pain!!".
Mike