I have a 2002 c240 and wanted to know how can i upgrade the calipers? wat car can i pull it out of an have it bolt straight on? or wat should i use or do?? help please

this may be better suited in the normal W203 forum. The C32/55 4-piston brakes are a popular upgrade and will fit your car but you'll need larger wheels (at least 17") to make room for the rotors. If you really want to get crazy the 6-piston setup from the SLK55/CLK55 will also work.