Front seats - there’s a button on one of the base plates the head rest slides into. Press on this and pull the head rest out.
Rear seats (wagon) - same mechanism, but it could be on the underside of the back of the seat in the cargo/luggage area - I can’t remember exactly though.
I hope this helps!
Cheers
Bennie
I have sold shells to scrap yards before. Just need the title. Won't get a lot of $ right now, especially if they pick it up. I did cut a couple up into pieces years ago.