Chevy Disc rotor ID help please

I recently bought another 57chevy that came with with disc brakes and caliper bracket, but so far I have not located the calipers in the parts pile that came with the car - they may have gotten left off the car.
I am working to clean them up and need some help with identifying what rotors these are, and what calipers would work on them.

For identification, there are 5 indents with text in between the lugs.

GM11 (perhaps GM 11-inch rotor)
MINTHICK
.965 ( or .985, not certain)
3967012
F82

Thanks for your time.
Bill

 

68 -72 Chevy Chevelles, Novas and Camaros

 

Speedway is garage sale-ing those rotors..... You will need the bolt pattern

 

Thanks for the feedback.
The rotor bolt pattern is the standard 5 on 4 3/4" bolt pattern.