The transfer case does, yes.
NP243
The transfer case uses ATF.
It is on the center of the rear of the transfer case.
No. A 1993 Jeep does not have such a part.
Depending on what transfer case is used, most of the time, yes they will fit.
The fill plug is on the center of the rear of the transfer case.
New process 231 transfer case
No.
about $1000
Np231
3 quarts