Its the same basic trans as the aod and aode found in broncos and f150s. I replaced my awd case with a 4406 from a 97-03 f150. But 205s, 1356s etc will bolt up. I chose the 4406 because it was lighter and offered a much better low range then a 205, and it was narrow enough to fit in the frame rails.
My wife and i both have 98 explorers with 5.0Ls and i converted both using the 4406.