Like I said I understand that it is wrong but yeah I'm not really worried about it. The rotor is still a 13 inch 24lb. heat sink and I'm sure it will perform just fine at the track. If it doesn't, I will certainly post it up on here.
I am grateful Dr. Diff produced a pretty good Stage 4 brake kit for the money, so no way am I returning them. If rotors with the opposite vanes are made I will just buy two more