what is involved in rebuilding k-h disc brake calipers?????????????

i need to rebuild a set fo them, and i have never taken a set aprt.
i see the rebuild kits on rock auto. but i do not see where to get the short pre-bent short brake lines at? anyone?

do i need a small hone to do these brakes?
or would it be best to just use mine as cores? and get the ones from rock auto?

enlighten me, please