i drilled my rotors at home using a drill and using the template supplied, it was simple, no need for a machine shop, i have put aprox 10k miles on my scarebird conversion. They work great, so much better then the manual drum brakes. The only problem i found is with the reman MC, seems none of them have the redisule valve for the rear drums like my factory MC did. once i got the right MC it works great, little effort to stop and a great pedal.
without that valve i had excessive pedal travel.