Seats?
Reg cab-> crew cab = same floor pan
The mounts or slides may be different but the seats themselves should have the same bolt hole profile.
My 95 Bronco has different seat sliders/floor mount than my 85 Bronco does but the seats will swap out if I all I do is change the seat itself onto the correct slider.
The 95 Bronco mounts WILL NOT bolt into the 85 without a lot of modifications as the floor profile is not the same
Just a few months ago I was looking to buy those very exact bull nose captains chairs but could not find any so I located some nice ones in vinyl and currently have an upholstery shop redoing them in the exact blue fabric acquired from SMS fabrics.
Your drivers armrest has been redone as it is all vinyl, which is the way I am going too because I think the vinyl will wear better than the velour.
Leave the sliders in the proper year vehicle and the seats themselves (sans sliders) will mount up to the Bronco's original sliders.
After looking at your post pictures, looks like you are going from a bench over to a bucket seat. That may need additional effort to make it work as well, ie: finding bucket sliders that mount into the respective year truck as I think that the 84 seats will need to be mounted to a 94 bucket slider arrangement, which you won't have if your 94 has the bench.
Hope that makes sense.











