I am not sure how this all turned out. I can only assume it went well since it was a complete front end overhaul. But, a clunking recently started to happen to my 560 SEL without any recent work to bias my search, so I suspected everything. I found the culprit to be the rubber bushings on the upper end of the shock absorbers where they tighten to the frame. The ones in the back were a major hassle since they required bleeding down the hydraulic shock suspension system and removing the back seat and a jack to manipulate the sub frame all to remove the shocks and replace the bushings. This fixed the clunking... Small expense for parts and hydraulic fluid, medium commitment for your time (for me took 5 hours)…

Regarding the large track rod bushing (sometimes called caster bearing, or aft Break Rod Bushing, or Thrust Bearing) that screws into the fore-aft rod that attaches to the lower control arm in the front… I replaced it in the bracket and did not require any special tools or efforts Simply coat the large bearing with grease to cut down on corrosion and aid the installation, align one of the lenghtwise groves with the bottom aft drain slot (to allow water to escape if trapped) and place it all on the floor and lean on it. This got mine 75% of the way in, then a rubber mallet to drive it the rest of the way works great. Be sure to wipe off all excess grease as it will cause the rubber insert on the back plate to deteriorate. I used silicone grease to coat the back plate and area prior to installing the rubber insert and back plate. Since this area has steel against aluminum the inside of it is bad about corrosion.

Bill