Cake walk... Those yrs
should be the same frame/tracks.
Did you get the transmission with the seats? or just the seat cushions in the shell without the tracks and motors?
The seats are semi modular...the bottoms snap in/out and the backs do as well. Cushions go in the shell, the shell goes on the track frames. Part of the track frame is what moves when the seat positions are changed.
Regardless of the style of seat, the same 4 bolt floor pattern is used. There will be 4 studs sticking up out of the floor and the tracks bolt to that, the shell has four bolts to the tracks.
The shell rides on the track-frame that has the transmission/motors.
If
changing parts only,
1st.... find the spring latch on seat bottom flip it down and back and lift bottom cushion out,.
2nd....locate intermediate bolts 2 in front 2 in rear. slide seat forward or back to gain access.
3rd...lift seat shell out and off of transmission.
To change the whole seat shell,
frame and all, locate the 4 floor studs, remove front nuts, slide seat forward and remove the 2 rear nuts. Lift the entire assembly out. Unplug as required. I think its easier to do in sections, mostly because its too awkward and heavy for me to lift the whole thing. Taking the top off before hand will give some much needed room to manuver the shell. I pull mine once a yr for housekeeping underneath.
Once the old ones are out, get the vacuum cleaner, do some cleanup and install the new seats. You should get at least $2.50 from the driver side, maybe $0.20 from under the passenger side. A couple fossilized french fries too...
Plugs....
there is a fair chance that they changed, but the basic wiring is the same. it may take making some notes and a volt meter to chop off plug ends and swap them if you want to swap the floor frames. I would use the old frames if they work.
I would advise using the seat bucket shell thats on the new seats if its in decent shape. The seat back cushion is sometimes challenging to remove and re-install in the shell. This way the transmission stays and so do the wires,plugs & motors. Swapping shells eliminates wiring hassles.
I'd change the shell with cushions and use your old existing floor track. No wiring, that way. If there is lumbar support, you will have to do some electrical but the wire harness will be there, you just have to adapt your new seats.
You scored
BIG on a pair for $250....

The going rate for good seats is 4 times that..used.
I just recovered mine a couple yrs ago at a cost of around $600 for material and labor. That was knowing a guy that did the work on the "side"...and, I used marine grade vinyl instead of a hide.
Once you see how the seat bottoms work, you can trade the driver side and passenger side bottoms every few months to extend the life of the side bolsters that always get squashed and folded over and worn out before anything else.