As far as I know all E36 have the same mounting dimensions for the seats, so it doesn't matter if the seat came out of a 92 318 coupe or a 96 325 sedan. Only the rear seats are different. Just make sure you get the same style...
And of course the second option is to take your seat apart, see whats broken and if possible bring the frame to a welder and get it fixed.
Don't forget guys, these seats were designed for the average person 5,9 tall and about 180 pounds.
So if you carry a heavy wallet in your car that will cost you.........