I sent my monza rotors to moser to have redrilled to 5x4.5 bolt pattern.
they sent them back and said they cannot do it.
I know of 2 sets that i have personaly seen done by moser
and seen many online that have been done by them.
They gave me two different answers as to why one was 1 stud will hit the support vane and the other was the inside diameter is to small and the studs will hit
both the answers are bs as every set i have seen done had the same issues.
I can only guess that they have had a liability issue