they might be different on some models but they would be interchangeable either way.
It is on the center of the rear of the transfer case.
diagram from front vacuum motor to transfer case of 1993 Jeep Wrangler
Yes.
No.
No. Automatic transmission fluid is the recommended fill.
how to replace the slave cylinder on a 1993 jeep wrangler
The correct factory tire size for a 1993 Jeep Wrangler is 215/75R15.
The correct factory tire size for a 1994 Jeep Wrangler is 215/75R15.
No.
Yes, it will fit just fine.
Certainly, they are both YJ"s.
no it will not, the frame is slightly smaller in the earlier jeeps