Thought I should share this too, spent a lot of time getting the brakes I wanted on the bike. Used a A2Z 22mm to IS brake adaptor which requires a 20mm bigger rotor. To get around that I put the front caliper on the rear. Then with the rear caliper on the front I can use a 180mm rotor with no adaptor. A little bit of grinding was required, but it all works great now (the aluminum bolts have been replaced with steel).