Trying to identify
 

Does anyone recognize what these seats may be out of originally ? They came with my 73 camaro but are obviously not the correct seats. I have found original f body seats already but wondering about these . Thank you!
https://cimg1.ibsrv.net/gimg/camarof...ceafabb80e.jpg
https://cimg7.ibsrv.net/gimg/camarof...d47445ecf6.jpg