Schwere Zugkraftwagen 18t mit-t-seilwinde (Sd.kfz. 9/6)

sorry to ask but does anyone have any info/pictures of this version ofthe beautifully imposing vehicle?

Voila ! The only info I got is that the crane could lift up or tow 30 tons.

Two things strikes me in this photo:
The gaping hole below the cowling; is it engineless or was the super-high bonnet mostly for style?
With that much track why didn´t they go all the way, remove the front wheels and give it two more pairs of road wheels “inside the track”?

Showing recovery mode with spades/earth anchors deployed (Most of the following seem to be labelled as 9 or 9/1 though)

Sdkfz 9/2

Basic Sdkfz 9

http://vincesgallery.smugmug.com/gallery/1398314_hWyz3#P-1-20

A few pics from the Bundesarchive Bild

http://commons.wikimedia.org/wiki/Category:SdKfz_9

I’ve never heard of a version 9/6 anyway, just 9, 9/1 and 9/2.