Personally i'd go for these.. http://www.sngbarratt.com/catalogue/parts/show.asp?id=17208&keys=JLM20801B&modelfamilyid=&categoryid=&stype=1&pagepos=0&back=n And these pads http://www.sngbarratt.com/catalogue/parts/show.asp?id=18574&keys=c2c23786&modelfamilyid=&categoryid=&stype=1&pagepos=0&back=n These are both for the 300mm disc, your chassis number is on a change point where it could be either but as its a non supercharged its unlikely to be the 320mm but you might want to get the tape measure out :D