The front seat backs on mine have a pocket attached. The attachments have broken through the plastic and the pocket is only partially attached.
I am thinking of just removing the original rear seat backs and installing them on the front seats. I don't really need the seat pockets anyway. Were they original, or did someone add them.
About what is the price of new plastic seat backs?
I have plastic seat backs from my 1978 arrow III they were removed when I put on airtex stuff. I don't know if they will fit...perhaps someone knows...you are welcome to them for a modest px and shipping...total of four.