I've done a lot of research and I've defiantly used the search function. My problem is this. There isn't much information about doing a 4x4 conversion-sas-on a 98-2000 single cab with a 2.5 and 5 speed. I know that the best choice for a front axle is a d44 out of a wagoneer but I'm not sure which year range I need. Im also considering a d30 from a newer jeep simply for cost. Its going to be driven often and not strictly a toy. I just want it 4x4. I'm also having a hard time deciding how to make it 4wd since they don't make a 4x4 transmission for my engine. I know I could do a motor and trans swap but I kinda want to keep the 4 banger. I also know I can have a 4wd tail shaft put in my Trans but that would make future repairs a nightmare. Would I have enough room to run a divorced tcase like a Dana 300 considering the truck is so short? Sorry for all the stupid questions but I know you guys have some great knowledge to share. Thanks in advance for any help.

 

Ranger 4cyl 4x4s were not all that common but were made up until about 1997 using the 2.3l Lima engine.

You have the 2.5L Lima engine so trans(M5OD-R1, 4WD) from 2.3l Lima will bolt to it.
I think you may be able to convert your 2WD M5OD to 4WD with new output shaft and tail housing but never done that myself, so can't say for sure, but stock 4WD trans is available for the 2.5l Lima, manual or automatic, from a 2.3l Lima 4x4 Ranger.

Just as a heads up, Rangers got the new 2.3l Duratec engine in 2001/02 model year, no relation to the Lima engines, so a trans from a 2.3l Duratec won't fit 2.5l Lima, but I don't think there was a 4x4 Duratec in any case

Transfer case would be BW1354(or older 1350), from any Ranger 4x4, manual would be best to find but hard to find, lol.
Adding the 4WD electric shift is not hard but.............they are not that reliable long term.

Not sure on adding front axle, you may need different oil pan and oil pump pickup from 2.3l 4WD, never looked into that.

As long as front axle ratio matches rear axle ratio you can use whichever you can get at a good price, use manual hubs