I needed front wishbone bushes replacing on my W201. The wishbone setup on a W124 is virtually identical to that of a W201. My trusted MB specialist advised me that it would be almost as cheap, and certainly advisable to replace the complete wishbones - as it is possible to buy a complete wishbone with bushes and ball joints already fitted. It was good advice as when he removed the old wishbones (it took all of 10 minutes) he found the ball joints were shot. So this saved all the time and hassle of trying to extricate the old bushes, which can be a complete pain if they're stuck in, as they frequently are. Febi Bilstein wishbones are what he fitted to my car and are OEM quality. Even if you just replace the bushes, you will need new bolts and eccentric washers from MB and will have to have the tracking re-set. Hope this helps.