Just happened to be browsing ebay, sober I may add, and came across these at a stupidly low price whatever car they are for: BREMBO AMG MERCEDES BREAKS 4 POT CALIPERS CL500 | eBay The part number does not appear to mean anything, nor did they come from a CL500 as its a non AMG car! To me they look like the SLK55 rear calipers. SO hope with a few more bits they will fit my C55! Anyone have an idea what they are from? I just had to click BIN before anyone else seen them!