Christian,I don't have the C97 here with me but I've build an updated AOKP 4.2. If someone wants to try it here's the rom zip, use the same "common", gapps (and eventual comp zip) from cm10.1 thread
ps: if launcher shows a fully transparent nav/notification bar then change opacity using the slider under "ROM Control -> General" settings
Tried this on my C97 & problems I've encountered so far are that the calibration / rotation is off, as in you hold the tablet portrait & it flips landscape on the screen & vice versa (?) plus tapping Performance Control in the Rom Control area crashes Settings every time.
Plus hitting the back button on the bottom toolbar launches Google Now every time it's pressed as opposed to actually going back to the previous screen