KH SBP caliper sticking- best option?

Stainless Steel Brake Company got their start rebuilding the K-H calipers w stainless pistons, mostly Mustangs since rusted sticking calipers was a common problem, especially since most owners never flush thru new brake fluid. I recall you can buy stainless pistons alone on rockauto. I use DOT 5 silicone fluid in all my vehicles for no corrosion. I don't have K-H disks (I wish), so can't say. Hemi71x is near me, but I can't justify $900 for his front disk setup, though it is pretty.