Thanks - looks like it is worth taking the risk. I will scout around again for SBK parts.The nut shouldn't change because you will still be using the same clutch centre shaft. so you will use your original nut. Good point on the push rod. The later push rods were a different length. The need for the different length rod (about 10mm) was mostly to accommodate the different position and type of clutch slave cylinder used on later bikes. If you use your original push rod I suspect i anything you may only need a 2.5 to 3mm longer push rod to accommodate for the deeper hub of the later bikes. The simple way to achieve this is to insert a short rod of 2.5 to 3mm inside the slave cylinder. When you fit a later model slave cylinder to an early model bike you either stick in a short 10mm rod or some people even insert a ball bearing into the slave cylinder.