Subject: RE:C5 Brake Calipers on a C4 by Matatk on 2008/2/15 1:33:09
You also don't want the rear calipers. They are a lot of modification/hassle to get them to work with the C4 parking brake, and most say they aren't much of an improvement anyway. The fronts are the ones that matter. On top of that you will need that bracket mentioned above.
I'm halfway into the process of doing mine - I'll have some pics once it's done. Not for a couple weeks, though.