Can anyone tell me if the coil spring of the 2005 C230 Sport will fit on 2001 C320? Also, what is the stock size (mm) of the spring pad on C320? The reason why is, I want to use the spring from C230 sport (if fits) to lowered my C320 and still have the original benz springs instead of buying aftermarket spring (Eibach). What is the height difference between the spring of C320 and C230sports? Also, is it ok to replace just the front spring instead all 4? Thanks