Also Moose, I know you have no experience with the Rotora mini calipers, but I've read of others on the site using RSX-S brake kits on our cars, and that the two cars have the same brakes. Do you think the Rotora RSX kit will work with minor modification?
http://www.rotora.com/press%20release/MINI4.pdf
One more thing, and I'll leave you alone. The description on the Rotora site for this kit says you can use the OEM rotors with it. Would this be advisable, or would it be better to get new rotors?