Not all Ranger axles are the same width...Axle Width Differences:
People have asked about the widths of axle shafts to swap shafts from one axle to another.
The early 1983-1992 Ranger axles are 1" shorter than the 1993-up pieces. (Both sides) meaning that the an entire Ranger axle assembly from 1993-up is 2-inches wider than 1983-1992.
From here, a good source of info...
Ford Ranger Axles - The Ranger Station