SK it is and an 03 model, but you are right it is an S not an SM
nor an E, and once again you are right the calliper brackets are the same for all 3 models but mine has been modified to take 320mm disc. Now if you have tried braking down a 1:2 scree incline with 40% more braking than you actually need you will know why I want to revert to the correct diameter disc, hence my request . If I were interested in burning Tarmac, doing stoppies and wheelies and all those other cliche street boy things, I would be delighted with the dustbin size disc. My question was whether there is a yearning street boy out there that wants to do a swap with me ?