If your good with a drill and handy with the spaners - these pics show how to link the pistons from INSIDE the caliper - it looks real neat with just a plug outside the caliper instead of a link hose.

 

Any other m/cylinders that would be as good, as I can't seem to find any for sale anywhere (2 nd hand obviously ) ?

 

I also drilled the rear. It takes a little time to get use to the better breaking back there. I would suggest you drill but go with a rubber hose to soften the feel. I built my brackets for some aluminum flat stock from the hardware store. Then at the same store I picked up some large washers and a pack of cable ferrules to build spacers from. Keep some the original hose holders and reposition them to hold the new SS lines.

 

Your looking for a 14mm bore master cylinder - The reason for the CB1300 one is that it matches the clutch reservoir perfectly.