Thanks! and yeah you are really lucky lol. It seriously sucks!!! If one thing is the wrong part number or routing from their horrible diagrams, fail. I had to pull pics from the mercedes workshop manual. I also talked to the guy about the 55K motor and it's a good thing I'm going in steps. The 55K motor in a NA crossfire would fail since the air pump is driven from the SC, not an electric one on the front. If you start with an SRT it's ok. Or if you are currently based on a platform that motor came in which I am now since I smog by the SL R230 class. I may not even need to visit the ref for the 55K swap, just smog normally since it was an "option" by which I smog now.

The last thing they mentioned which will be enforced is the whole ULEV to ULEV BS.