I am wondering if the SLK32 calipers will bolt up directly to the 320. I understand that the 32 disc is 330 dia and the 320 is 300 which would also require replacement. BTW, I have CLK320 17" rims installed so clearance is not a problem. I also have a wild hair to install the S500/E430 Brembo 4 piston calipers which also use a 330 disc. Don't know how feasable that is though. I know there are big brake kits out there, but they are crazy expensive, and sourcing these other parts off ebay is wayyyy cheaper! Any experience or thoughts on this?