This is the best spitfire quality rotor we have been able to find. You may be wondering why we have Spitfire rotors as a Spridget company. For many years we sold a kit which was actually offered by British Leyland at one point. It was a "big brake kit". This kit had a adaptor to use larger Spitfire rotors and MGB calipers. We also sell a cheaper aftermarket spitfire rotor. These are sold each.