That's such a gorgeous bike... are you using it as a street bike or in the velodrome? If it is staying on the track, you can't put a brake on. If it is for the road, see if that fork is drilled for brakes. That's a nice track bike, it might not be. If it isn't, and you want to put on brakes (you should), you will have to swap the fork (I wouldn't drill a carbon fork).

It really is an incredible bike... but I would hate to see it on the streets. It'll get torn up in no time.