Two words, vacuum hubs. Everyone I know with a 1998-2000 Ranger has vacuum hub problems. They're crap in my opinion, and I will never own one.
If you want to lift buy a 1993-1997 Ranger. The TTB is alot cheaper to lift and if you align it right you wont have camber or tire wear problems. If you like the look of newer trucks, you can put the front clip onto it as well, and the body lines almost match.
The best match would be a 1993/94 4x4 with the 4.0 and a stick. There's a good chance you will get the manual transfer case and hubs from the factory. Plus, you get the OBDI system. If your state uses the 1996+ rule for emissions testing then you'll be fine with a 1995 as well and you can get the updated dash. The only thing is 1995 comes with OBDII if I'm correct.
Another thing, I'm about 90% sure that ALL 4.0 trucks came with the 8.8 rear end, something to consider when your looking for a truck. The 4.0 is the better V6, with more power and about the same fuel economy. The good thing about the 3.0 is that it will last forever if you take care of it, even if you don't it should last at least to 200k. I'm at nearly 170k now on mine (I think) and I abused the hell out of it.