Help needed for Power Ram 50

[camoit]

Hi guys, I own a 1992 power ram 50 I need to change to differential case and the ecu, the one it has is :md163056. Please I need to know which truck differential I could replace the one on the power ram and what is your suggestion for the engine computer unit. Thanks

You can have the ECU rebuilt.
But what do you mean by "to change to differential case"?????