4- piston caliper "sleeving"?????

I have a '72 A-Body with the original 4-piston caliper disk brakes, and one of the calipers has had a problem, almost since it was new, of one of the pistons sticking in its bore, and not retracting, This not only slows the car down, (dragging brakes; just what you need at the drag strip.... NOT!) it wears the pad into a wedge shape and wears it out prematurely.

I had a friend who made his living supplying calipers (to a brake-shop retailer for Corvettes) that he would rebore, and then press in a stainless steel sleeve, so the bores wouldn't rust. When they rust, they get pits in the surface, and the abrasive action attacks the rubber seals and then, they leak and tend to stick in their bores... like mine is doing.

Brake fluid (regular-style) is "hygroscopic," which as you probably already know, just means it absorbs water out of the atmoosphere. That water is what causes the bores in these calipers to "pit" and destroy the rubber seals.

I am trying to find out if it's possible to buy stanless steel sleeved calipers for my Valiant, like my friend used to make for Corvettes. I'm tired of this problem, and would like to fix it "right." I'm not going to replace this system with the '73-up single piston caliper setup unless I have to.

If anybody knows of a stainless steel sleeved caliper setup for my Kelsey-Hayes, 4-piston calipers, please let me know.

Thanks for any information!!!

Bill, in Conway, Arkansas