What year and model brakes are these?

They’re definitely 73+ Mopar single pistons. They would have been part of a large bolt pattern brake set up. The slider mounts mean they could actually be off an A body, but they came on a bunch of other stuff too.

The thing to check would be the piston diameter. A-body 73-76 calipers had a 2.6” piston. Everything else has a 2.75” piston. But even those you pretty much have to measure, the look the same otherwise and use the same pads. Other than the caliper itself and hose length, pretty much everything brake and wheel related with the 73+ brakes is the same.

If you need to do a caliper service measure the piston and go from there.