I bought the McMaster stuff. I just finished draining the oil in the r6 forks, I want to replace it with a little heavier weight to make up for the bike being heavier but I am not sure if thats the way to go. Anyway, I cant see any issue with using the spacers other than aesthetics.
Now the fender brackets, those would be nice. I am still sitting here with some chunks of aluminum and the tools Ryan said to get.