There are a couple who have made it a DIY project. As I recall, tools needed included a spring compressor. There was an issue with the new arms having serrated torx bolts onstead of hex heads if i remember, and the bolt diameter being slighty different and requiring a sleeve. I decided I wouldn't want to do it, especially as my tech would know what to look for while inspecting the rest of the bushings, mounts, and subframe goodies while he was in there. I will try to find the back postings in the archives later today and attach them.
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E