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 ****on. 67's had matal backs with release ****ons. 68's had plastic backs and sides with release ****ons. In 69 they went to release ****ons in the rear of the seat back and they were all plastic and all the same up until 72.