MC Motoparts on ebay. I imagine you'll need seperate adapters if you're fitting them to a faired fazer.
Here's the USA link for the mirrors, and if you search 'dynamic cnc adapters' on ebay they list a whole load of adapters for different bikes.
Thanks for the info, I'm almost finished with my naked conversion so I've got the handlebar mounting posts already. I bought a really cheap pair of ebay mirrors the first time around and I just know they aren't going to hold up very well. I grabbed a pair of mirrors from Amazon so I'll see how those hold up and then probably grab a set of the ones you have if I don't have any luck.