identify seats

Anyone have an idea what these are from?

 

my guess is 66ish chevelle

 

gm for sure what year? hard to tell

 

Gm used in a number of vehicles. My '66 Caprice 2 dr hardtop had them.

 

1966's had metal backs with no release button. 67's had matal backs with release buttons. 68's had plastic backs and sides with release buttons. In 69 they went to release buttons in the rear of the seat back and they were all plastic and all the same up until 72.