[philthyphil]

The calipers you want are the 18Z caliper. From my understanding the bolt location is still the same and they fit perfectly. There was another guy on here who put the 6 pot calipers on his, I think they were yellow. I had actually pondered the same thing on mine but wasn't sure about the abs coding. I'd bet one of the V8 R-Line guys could chime in with that though since they still have 350mm rotors up front. I had the 18Z calipers on the front of my S4 and really liked the feel of them.

You can probably pick up a used set and powdercoat / rebuild them. It would most likely still end up costing way less than new.