F-body brake calipers?

Valkman said
ok so what I was lookingathttps://www.ebay.com/itm/304065130934 listed for an 82-89, so I'm guessing there different.

Also could anyone tell what the 2 rubber bands are for?

Not sure what went on in in 80- up stuff but I'd stick to the 76 version with metal pistons.