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A bit confusing, Dana differentials were used on the front of Ranger 4x4s
Rear differentials were Ford 7.5" or 8.8" on Rangers
2002 Ranger FX4 and 2003 and up FX4 level II did use Torsen limited slip 8.8" with 31 spline, and these were all 4.10 ratio
The 1993 to 2011 Rangers used same width axles and same mounts so are interchangeable, 7.5", 8.8" 28 or 31 spline, open or LSD, direct swap
Explorers used 8.8" 31 spline but different mounts than Rangers they can be adapted for use in Rangers
You want to swap the whole unit, because bearings will be an issue, 28 and 31 spline are different size axle diameters, and the axle tubes are larger, so..............
9" or 10" brakes won't matter in a swap