These are the Scirocco 16V calipers you bolt on with a set of 10.1" rotors to get the bigger brakes. No going to the bigger master cylinder. Super easy install. Same setup I have on the Pickup and that I have run on oodles of A1 cars I have owned. Heck the Dasher is getting a set. Got a set sitting on the shelf, thought I would offer them to the list before ebay. $65 shipped. Greg