Technical Zephyr hub versus Ford hub questions

Another topic that may have already been beat to death.

I was recently given a free set of 39' Zephyr hubs which appear to have a longer snout. May be a stupid question but can these be used for swapping juice brakes on "A" spindles? I dont have spindles here to check but I do have juice brake backing plates that have already been re-drilled and the adapter kit for "A" spindles as well. Just not sure if these hubs will work or if I need later Ford hubs as well. Thanks in advance