ID Mystery help

[Tony Smith]

Any help in ID'ing this Axle? I am presuming it's Ford, although it could be a Timken from another vehicle. The differential centre is smaller than CMP or Carrier, and is pictured upside down ie the axle mounts under the springs. The wheelstud pattern is smaller than the Ford Truck 5 stud pattern, but not small enough for Jeep/sedan style rims. There is no provision for mounting shock arms on the axle, perhaps they were on the u-bolt clamp?