One of the challenges that my Dad faced in restoring the Ford Model A was that he could never find any seat frames. Let’s just say that when you are dealing with a car that was made in the 1920’s — parts like seats are a little hard to come by. Nowadays the internet makes searching for things like seats a little easier and the challenges are more the price (not cheap!) and the condition (normally rusted and beat up).
I searched and finally did come across at least serviceable seat frames. One was the bare frame with the springs, the other still had a lower cushion/upholstery but the rats had created some nests in there and so it was nasty.
I took both of the seats all the way apart to get to the metal frames & wood frames — which you can see shown in the pictures below. My Dad had already bought new springs for the seats and new upholstery, and so now it is a matter of cleaning these up and reassembling everything. (Fun!)