One thing I can chime in about is the braided hose which feeds the clutch hydraulic system. Its NLA from Mercedes although at some point, I believe recently, Mercedes created a better hose for this application. Instead of a rubber braided hose with no clamps at the ends, Mercedes made a new plastic hose with pressure fitted ends, on the left in the photo below. (The old braided hose is to the right)



Part number: 25141119 ($21)


This hose is flexible and with both ends being identical, you simply slide either end of the hose through the firewall with one end and connect it to the clutch master cylinder first, by pressing it into the barbed fitting which you need to keep from the old hose:



The smaller end plugs into the clutch master cylinder (if it happens to come off while disconnecting the old hose)

And then simply connect the other end of the hose to the barbed fitting on the brake fluid reservoir

The hose, although $21 is very high quality and is the right part for the job. I wouldn't use anything else personally.