I have a set of 374mm Brembo 4 pot Calipers (taking off of a 7 series) which I was going to use as a "Big Brake" kit for the front of my g20. I ordered these over a year ago and they have been sitting under my desk at my office ever since. I never got around to getting the additional hardware/items needed to install. These are essentially the red "performance" ones BMW sells. These are just the standard OEM grey. They bolt directly up. No modifications needed. Just need the discs, pads and dust shield. I have a parts list if you'd like that. They also come with pads which are slightly used. Asking $650.00.