You will need the cross member moved over to the 1995 for the driver side 2.3l motor mount
You will need a 4x4 manual trans that fits the 2.3l
2wd manual trans can sometimes be converted, but you usually need to find a 4x4 trans to get the parts from, so.............just easier to get a working 4x4 manual trans, lol
Transfer case and 4x4 electric control system works with any engine computer and 4x4 transmission
You need the 2.3l computer and its engine wiring harness, there will be some wiring splices needed, since this is not a common swap you will most likely be on your own as far as matching up wires between 1991 computer and 1995 12volt and ground system
If you can get EVTM for 1991 Ranger and EVTM for 1995 Ranger that would make the wiring interface much easier to figure out
EVTM = electric and vacuum troubleshooting manual, its what Ford mechanics use
Ford makes one every year for every model it sells and its sent out with the Shop Manual set to all dealers that year
The EVTMs are usually sold separately
Ranger EVTM would cover all sub-models and engine and transmission wiring for that year Ranger
They will tell you what every wire is for and where it is, MUST BE for specific year
People buy them, use them, then sell them, so you can do the same it means they are usually FREE if you can sell it for what you paid