what master cylinder for disk/disk set up?

thanks for all the great info guys. i ended up going with a MC from a 2002 intrepid which has a bore diameter of 15/16". the only issue i have is it is mounted pointed slightly upwards so ill have to mount it at the same angle to keep the resevoir flat. there was one from a 2002 caravan which is mounted parallel to the ground but has a 1.06" bore so i went with the one from the intrepid. the MC has a fromt line thread size of 12mm and the rear line is 10mm.