Aluminum, Brass, or stainless Wheel cylinders?

[Stripes]

On cars that don't get driven often that have cast iron rear wheel cylinders, its pretty common to see them rust, leak, and fail. I see there are places that will sleeve your OE wheel cylinder with brass or stainless and warranty them for life ($89 each). 

Is anyone aware of wheel cylinders being sold already sleeved or in a aluminum, brass, or stainless material? My 1969 Firebird rear wheel cylinders are about as common as they come. They are used by GM for 20 plus years in almost everything. They are cheap to buy new, only about 10 bucks each in iron. But they rust fast if not driven much. Has anyone seen any better replacements?

 

[Ant]

If your worried about rust run dot4 its synthetic fluid. Other option is to flush about every 2 years. Besides the best thing you can do for the whole car is drive it at least once a month. A long time ago a good friend gave me that advice he had one of the nicest 65 tri power cars, it was black on black. He said he used to let it sit for months at a time and it was always something he had to do, carbs leaking brake issues then he started to drive it at minimal once a month said that was the end of the problems.

 

Ant