I think what others have said is that you already have K-H 4 piston calipers with 2-piece rotors. Just get new rotors, rebuild the calipers and install good pads. Best of luck.Like I mentioned earlier I don't know what's on there just that they are not original. Some PO swapped out the original drum for this setup.
I do like this idea...everything I need including dual bowl MC (I have single now)...Ford Kelsey-Hayes Type 4 Piston Caliper Manual Disc Brake Kit V8 - Manual or Power