This solution should give you reasonably good service. In the old days I rebuilt many mc for brakes but now the rebuilt unit is nearly the same price so I just buy the whole thing. This is just like buying a kit to do the job. Although the bore will be worn it still should work for a good while.

Some of the nasty pitted bores I got to work because there simply was no replacement available (but a kit was) I would never have believed would work, but they did!

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.