Originally Posted by
e_guevara
Even if you get the crank right, you still have the problem of the brakes.
Since the Sirrus is a hybrid, it will come with either brake bosses or brake tabs on the frame and fork. Finding the right brakes that will match the 105 road levers will be a challenge. Good luck.
What's wrong with the brakes? I've seen a few other conversion with 105 levers and stock brakes.