I've got two Rangers. My old one is an 1989 x cab and I've got a 2000 x cab. Will the 89 bucket seats bolt right into the 2000? The 2000 has the split seats and the guy who owned the truck was a slob. I love my 89 seats and want to put them into the 2000. After I finish scavenging any parts, I'm selling the 89.
Suggest you check the tech articles:
http://www.therangerstation.com/how-to/interior-and-interior-electronics/
There's always a lot of interest in swapping seats. Based on what I've read, you have at least a chance of bolting your 89 seats onto the 2000 seat-tracks (of course any power stuff that's built ino the lower seat tracks gets left behind or acquired with the new set.
My direct knowledge is of the older stuff, and I can tell you you have 0 chance of unbolting the 89 seats with their original tracks and dropping them into the 2000.
Ranger floorplans were the same in the gen 1s (up to 1988) and gen 2s (1989-92). Starting in 1993 (gen 3s), a metal hump was inserted crossways across the cab, where the front of the seat brackets bolted into, instead of into the floor like on the older rangers. I was able to drill out the spotwelds on a 1994 (or 4?) supercab, hump, and ren=move it and the seats and use the seats as templates to weld the hump into my 91 supercab and mount the 93 seats in the 91. This of course involved removing the carper in both vehicles, among some other stuff.
Not sure if the floorplan changed again between 1993 and 2000. Also the seatbelts may or may not be something that will marry up between 1989 and 200 (one more reason to use your 2000 seat tracks, if you can.
Good luck!