I'm running an R300 Rotor which has a special type of slotted vent. My question is, is it possible to buy either a Baer, Steeda, or Roush 13" Rear Brake Upgrade kit, that I can throw on a 13" front rotor since they don't make the rear rotors in 13" of course... I'm just wondering if anybody has done it before? Or know if everything would line up? Thanks!