And if you are still too wide the additional mod is to turn the joint around so the mirrors have a lower flatter angle. Luke/ Devilsyam sold me a set and they were a big improvement
http://www.motorcycle-road-and-race.co.uk/mirror-extensions-sw-motech-yamaha-fzs-1000-fazer-01-05
Am I the only person who likes the OEM mirrors? The FZS1000 ones look ungainly on the 6, and aren't much better.