71 3/4 without Lockouts

[breeh]

I recently purchased a 71 3/4 4x4 as a parts truck. A tree had fallen on the bed and pretty much destroyed the bed. The frame looks tweaked as well. Anyway, the truck does not have locking hubs. I assumed that the front axle must have been swapped at some time for a later model fulltime 4x4 unit even though the owner who had owned the truck for 20+ years claimed that it was the original axle.

I recently read somewhere on the board that this was a way that these trucks could be outfitted originally. Does anybody know if it is possible that a 71 4x4 could come from the factory without the locking hubs?