To use these rotors you had to make the custom hub? I was planning on using a cut down stock hub but I'm having a hard time finding the center register size for these. Also, Did you re-drill the 112mm bolt pattern?
I've used stock hubs as well as hubs from Baer and Doctor Diff. I've also had custom hubs made. Just all depends on the circumstances.
The Mercedes rotors were modified slightly to fit on a 5 on 4.5 BC hub.