Clubman bars for 67 TR6... HELP!!

I'm currently working on making my 67 TR6 into a cafe racer, one of the many problems I'm having is finding handle bar clamps that will allow me to put Clubman bars on it. I have Pclamps now and I'm not able to run them through. Any Suggestions? or Does anyone know where I can get different clamps.

you need to find the type C top clamp that has the cast in risers but it's not just that easy.. there are several differant widths and rakes of tripple trees, so you need to match up the tops with the bottoms. the 67 and below are a little easier to find, the 68's and up were a bit wider to accept the twin leading brake.
good luck and remember when you change one thing you change several other things.