Ah, okay -- you are going back to the heavier stock one and just want a better balance it seems. Should cost about $50 from a shop that has the correct tools do do this. Much more involved than turning rotors. Not sure of any local shops off-hand, so you may want to start by calling up a few racer friendly shops in the area and ask where they get theirs done. Give Joe Overton a call at his shop. Experience and recommendations from past customers will count for more than just the simple tools and ability.