If the 4runner floor design is the same as the 93-95 runners, they should bolt straight in. A few minutes with a tape measure will tell ya. I am running 84 sr5 buckets in my 93. They swapped right in. I had to install a bolt and nut on the front trans side tracks, since the truck was oe with bench seat. the rear mount on that side lined up perfect with the seat belt hole. Then I also swapped in the center console. I put the seat belt anchor on top of the track foot. I really like the way the bucket is deep and the adjustable lumbar support and the side bolsters taylor the fit just right.
I would definitely try the runner seats. They should be more comfy, as the runners of that era were geared more toward comfort than utility.
