Here in New Zealand I'm finding a lot of r129s without rear seats.
I appreciate that there isn't a lot of room (OK, next to no room) in the back, but I would like rear seats (I have 3 youngish children) to make the car a bit more usable.

If I find the ideal car to buy, but without rear seats, is it possible to retro-fit them ?

I've seen that the horizontal seat section lifts out as one piece very easily and the backrests are thin panels just attached with hinges + catches.
It looks like it should be a reasonably straightforward job.
Or is that just wishful thinking ??

Any help or advice much appreciated.