hello, my friend swaped his differential on a C220 96 or 95 don't remember and its really a good mod considering the car pulls really good BUT it tops out at 180 instead of 210 km/h... im doing mine but i want a bit of info on differentials... i have 3.27 diff and the mechanic is gonna put a 4.2X forgot the last number... he says its gonna be much better... mine is a 97 c230 with the asr but no asr switch....