No & Yes.

This pump was located in the spare tire well (original donor). It could be the "same" pump as you reference since I don't know if other MBs shared this electric pump.

I am going to manual brakes. MB did not offer manual brakes from what I could tell. So, I had a plate machined. Actually, 2 plates machined. one for 6:1 ratio pedal ratio and one for 4:1 pedal ratio (current ratio, which is actually 4.XX). The latter is the simple solution, the first R&D. I can go to 5:1 without any real changes. The 6:1 is a different story.