i have a set of cl55 rear calipers for sale. by adding a small sleeve into the caliper mounts (12mm od x 10mm id x 19mm tall) these are a bolt on massive upgrade brake setup. trim the dust shields and add a set of slk55 330mm rotors and they work perfectly with the c32 or slk55 front calipers. they retail for 380$ each (760$ for both )

500$ plus shipping. i have the same setup on my car and its flawless the sleeves cost me 50$ from a machine shop