http://www.bikeparts.com/ProductInfo...hanger836.html
http://www.bikeparts.com/ProductInfo...hanger751.html
And I used a cast alu bolt on fork crown stop that was THE best compared to any stem clamp. the lower the stop and more solid, the better.
why not just run v-brakes?, they work a bit better than canti's, don't need stops and have a cleaner profile.