Here is the screen in action:
(oh, it is not an Opel)
The shelf where the screen hides under is standard, so in the closed position you have the factory look
due to the heavy screen the gearratio was changed from a 15 to a 20 t
also the hole of the vga kabel was inlarged to take the movement.

with mod., extra ball bearing en shaft on the engin to change the load of the engine (black shaft).