for those out there considering the rears as an upgrade to OE... the RB rear caliper kit *will not* work with the OE rotors. they are designed only for the RB rear rotors which are 2mm thicker. ask me how annoyed i am about them telling me they would work before they were available, and me purchasing/installing the fronts already. it may have been a miscommunication... ? idk.
the build quality is fantastic though! A+ to RB for that.