67 68 69 kelsey hayes disc brake hub/rotor with bbp

Here is the way to modify Mustang rotors to work with the Kelsey Hayes sbp disc brakes. It is a very good and detailed thread.

http://www.forabodiesonly.com/mopar/showthread.php?t=20544&highlight=mustang+rotors

The other option is RamMan but he is very expensive.