If you are using lowering springs you need to use MB sportline shocks or Bilstein sport shocks due to the shorter spring length.

With lowering springs the KYB's might work okay. I have a full set with less then 30,000 miles that I took off my 124 car that has stock springs. With shorter springs the shock rates being stiffer might work okay, but they were just too stiff with stock height springs.

The good thing about KYB's is that they last at least as long as Bilsteins. I have a set for sale if you're interested.

Have a great day,