Restoring a '31 barnfind CD8 Roadster - brakes/wheels

As per an earlier thread, this barnfind CD8 Roadster, which was heavily modified in 1952, has a '34/'35 Auburn/Columbia rearend and from photos, I have had it confirmed that all the rear wheel setup is '34/35 6 cyl Auburn. As seen in photos, the front drums match the Auburn rear drums (5 bolt at 5" centers) and I have confirmed they are Auburn. However as seen, the front brake shoe setup and backing plate appears to be '33/34 Chrysler model CO. That leads me to seek advice here on whether the hub/axle is likely Chrysler CO as well, based on looking at illustrations in parts book I don't see an alternative. It is interesting that the '34/'35 Auburn front drum seems to fit very well over the Chrysler CO hub/brakes, bearings seem ideal fit. Can anyone offer opinion on my conclusion, does axle appear to be of '33/34 Model CO vintage? Car ran for about 20 years (1952-1972) with these components before being " barned".