Here is what seats will bolt in to a Ranger:
All years. Tempo GT's are the nicest. Tilting "pillow" headrest and frequently power lumbar.
1981-1991? GT's again are the nicest, "Halo" style headrest, sometimes power lumbar.
(The 'Halo' Buckets in the TRS-2 Ranger are from an Escort GT)
Don't bother looking they will be gone when you get there. If you're lucky, look for Mustang GT's. Also halo style headrests on GTs.
1982-1988, Turbocoupe has nicest seats same as Mustang GT but with tilting "pillow" head rests, almost always power-lumbar, adjustable thigh support, adjustable side bolsters on base. The best factory ford seat (IMHO).
1986 Merkur XR4TI
The front seats from an 86 Merkur XR4TI will fit in a B2, so I assume rangers too, If you drill out the rivets, and swap the brackets from the tracks, 1/2 hour per, the seats I used gave me height adjust, adjustable headrest, lumbar support, much better lateral support, (no more bouncing out of the seatbelt) and they're heated. (Submitted by Merc)
All of these will bolt directly to your factory tracks if you have either Buckets or split-bench.
If you have a conventional bench then you will need to replace your tracks with split-bench/bucket-seat tracks. (Toss your solid bench tracks they are completely different).
You will have to run a Tap through some pre drilled holes in the bottom of the seat frames. The holes are already there but unthreaded.
If you have a conventional cab Ranger you will probably have to use the "halo" style headrest used in Mustangs and Escort GT models, as the pillow style will hit the rear window. This forces the seat back into a very upright position. (and is EXTREMELY uncomfortable)
If you have a Supercab Ranger or a Bronco2 headrest clearance isn't an issue.
One other word of warning Ranger Standard-cab, Ranger Supercab and Bronco II's all have different floor pan profiles and so use different seat tracks, so if you want to put buckets or a split-bench into a std cab Ranger you must get your seat tracks out of a std cab Ranger.
link--> Seat Swaps for the Ford Ranger/Bronco II