I would like to redo the suspension on my 72 280 SEL 4.5L The rear end sags and the front wheels have play. For my MGB there are a number of readily available manuals to explain what parts should be replaced and how to best do so for a suspension renewal. I have been less fortunate finding the proper manuals for my Mercedes. For the rear end sag, does this sound like worn springs? I see no obviously broken parts. If I do replace the springs are there other logical items to replace besides shocks? Are there commonly worn bushings for instance? For the front end, I am sure the bushings are worn, but when buying parts I want to be sure I don’t leave anything out, so does anyone have a good shopping list for a front suspension redo? And if I am replacing springs and shocks in the rear does it make sense to replace the front ones too? Thanks for any help & guidance.