I just finished swapping "new" seats from my '82 GL into my '82 westy
(ones with arm rests!).  When I finished, I thought I'd position the
headrests (restraints!) into their correct positions when ziipp! out
came the plastic sockets that hold the drivers headrest in the seat! I
managed to extend the restraint a bit by holding the plastic sockets in
the seatback while lifting on the restraint... BUT, I really want to fix
the problem. I feel this is a serious safety issue.

Question-  does anyone know if the plastic sockets can be replaced? Or
must I replace the whole seat?

-  does anyone know of any other solution??

Thanks in advance,
Brad