I'm assuming you're doing the 11.1in conversion huh?

I used

Johnson & Brown Machine Works
1257 Marietta Blvd NW, Atlanta, GA
(404) 351-9119‎

It ran me about $50 to redrill two rotors (and that was cheap compared to some of the quotes I got). If you decide to check them out that the guy with the red car from Georgia Tech sent you there, and they would know what to do (and they may even give you a discount). Also, I would bring in a rotor with the bolt pattern you're using as a templete.