Hello Tom, I've never torn one down or put one back together, and not even sure if I could first try.
This is my only wheels atm and I need a quick fix.
On the positive side, I do have three of them, and again, atm, the 2wd is the only one which doesn't require a complete rebuild. I can use the 2wd until tearing down the others to see what I can do with them.

Will I only need to find a 2wd 125" wheel base drive shaft ?
Will the specific rear differential need to also match?

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93 XLT Supercab 4X4 W/Tow Package (only power stuff it's got are the side mirrors, no cruise control or power windows, locks etc)