Don't know if this has been covered. I needed a pair of rear drum's but they seemed to be unavailable or very expensive. I searched through available information and the nearest i could find were for a Toyota Yaris. A friend of mine machined them for me to size. We took 7mm of the edge that goes to the backplate. Removed the larger cast ring but i think we could have left part of it on. We had to go 5mm further in on the braking surface. Centre hole machined out to size. We did not drill 4 new holes for the studs,they were very close so we just elongated them by 3mm. I bought 2xDrums for £44.. Drums i used were Borg & Beck BBR 7217. Stuart...