Bucket Seat Identification

[dagnabbitt]

I'm a bench seat guy from way back, but but starting to change my tune. I like these.

I am going to look at these seats tomorrow, the seller thinks they are from a 73-75 Blazer, wondering if anyone can confirm.

I have a 68, a 70, and an 81 and I think they would look good in any of them, but I'd like to know if - after reupholstery - they could be made to be correct in any of those models.

These ones have individual sliders so I imagine I would need a frame to adapt them to, any advice would be appreciated though.