Garry that was my 583, in 2005 there was only one DD class, made up mainly of 620 and the older bikes running 675 big bore kits, Myself and one or two others ran 583s. Engine was standard from a breakers but came with dyno-jetted carbs, down pipes were standard 600SS and the following year in 2006 it got on the newly formed Class B podium a few times. Then I made the huge mistake of moving to class A and have been going backwards ever since