I am using WIS version 5.1.2600 even though it does contain some of the SL in it, but it does not contain the 560 SL that is in question.
I personally use two data bases when working on the MB. One being WIS and the other is something that just has links to pdf files. I use this one when WIS does not offer a good enough picture, it seems that most of them are inverted and make them hard to see what it is in reference too.
I also find that searching would be difficult if you do not use MB's LNG, such as for steering column you have to search for jacket tube.
