I couldn't find any similar thread...
At last, I have one of these books in my hands !
The book is out of stock everywhere and the website
http://www.das-csl-buch.de/ seems to have an unregistered domain.
The book is from Friedbert Holz and photos from Walter Matthias Wilbert.
It has a lot of photos and information from the design, test and production of the M3 CSL.
Does anyone else owns this book here ?