im not runnin the mu discs but am the running the pads, very good and have just ordered another set as been so impressed with them as tried several pads over the years, the discs are very good, withstand more abuse before failure compared to oem discs and most beneficial point is reduced rotating mass with the the lighter bells
them discs will fit oem wheels and calipers
ps - im gonna end up stuck with spare set of pads when order arrives after mate pulled out so just send me pm if anyone wants set of p mu pads