Two door front seats (bench or bucket) are different from 4-door and station wagon seats – because the 2-door seats fold forward, to allow access to back seats.
You can put 2-door seats in the others but not the other way around (unless you don’t want to access the rear seat area).
Rear seats “generally” interchange between 2-door and 4-door models – but not necessarily in all cases. Station wagon and the rear drop down seats use completely different seats. I don’t think a J-body back seat will fit correctly in an F or M-body (but could be wrong - not tried).
Now to get back to your question. From mid-60’s to end of rear wheel drive Chrysler’s ('89) the seat holes are in same location and will interchange between most North America made Chrysler products – with a couple of exceptions.
I’m not sure about the older Imperials – not much experience on them.
Split-seats (buckets, 40/40, 50/50 or 60/40 seats) have 8 bolt holes.
Bench seats have 4 holes.
To convert a bench seat car to a split seat version, you will need to drill 4 new holes. Many split-seat cars also use a cross brace under floor pan for extra support – but not all have them.
If you decide to put a bench seat in place of split-seats, you will need to plug those 4 extra holes.
Split-seat cars only, Early F & M-bodies, the early Right side inner seat track is taller than the late FMJ cars are – due to floor pan difference (for bigger catalytic converter). Bench seat cars are not different. The seats are the same – only the Right side inner seat track is shorter (on the newer FMJ cars).
4-door cars did not come with center consoles – that I’ve ever seen (from mid ‘60’s to ’89) – but several people have put consoles in 4-doors and wagons. Consoles require brackets to be welded into the floor pan – so if considering adding a console, be sure to document their positions, cut-off and weld-in the brackets for it, as well.
If you use seats from another body style or older car, the seat itself may sit higher or lower than your original seats do (not a problem if you have tilt steering).
BudW