Using mustang rotors for 4.5" bc

Anyone that did this care to update how things are working ? I looked at doing this last year but didn't want to have to machine the rotor , maybe I've had my mind changed ?

I`ve had mine done for about a year and a half. I`ve put about 1000 miles on the car and have had the car up to 120mph with no issues. I`ve had one guy email me with problems machining a rotor but for the most part I haven`t heard of any trouble with the swap. I would like to hear of any successes or failures from those who have tried the rotor swap.