Can anyone tell me what these bucket seat came out of?

can the seat be recovered with 71 cutlass covers?

 

I don't recognize the seats but doubt they could be recovered with 1971 covers and look right. They're not cheap, but any 1969-72 GM A-body buckets, plus Pontiac Gran Prix are the same cores. Also the full sized GM cars used the same buckets with different rails that bolt to the floorboard. Before you spend the money on covers I'd look around for the correct seats.
John

 

looks like the same crap i've got in my car..the bolt holes didn't even come close to lining up with the original seat...ill check the tags on my car they have new leather slips which are smooth but i slide out of them when i take left turns

 

Those are Ford or AMC seats or something else funky.
They are not GM for sure.

 

Well, at least the back seats are correct for a 71