Quoting Ibified. The rest are gone.
"One VERY important thing to do is to drill the fairings while they are on the bike! This is how I did it:
1) buy a bolt that will screw into the motor mount.
2) grind the head off of the bolt and grind it to a point
3) screw the bolt into the motor mount hole with the pointed end out.
4) put the fairing back on and gently tap around the pointed bolt until you get a good solid mark on the back of the fairing.
5) dtill a 1/4" pilot hole through the fairing on the dimple that the pointed bolt put in the fairing.
6) (and this is where i differed from everyone, i think) Get your hole saw and remove the pilot bit from the center, and install a longer one.
7) Put the fairing back on the bike and slide the pilot bit into the hole and into the motor mount. The threaded hole will act as a guide that will keep the hole saw at 90 degrees in relation to the hole, which is what you want.
8) proceed slowly and drill the hole out of the plastics.
9) use a rat tail file or dremel to smooth off any rough edges left by the hole saw.
10) install frame sliders.
11) do a happydance because you are now officially cool.