@ DSOP
thanx for praising my english, it seems you never heard when I talk english.
@ Crazydriver
Yes, today I had the chance to test the RVG by GEMA Motorsport.
It's really unbelivable. You can adjust what kind of setup you like to drive.
50/50, 60/40, 70/30 or only AWD. What you have to do is bring your 4x4 to GEMA and he will built his system into your own 4x4box and will adjuyt it to your car. Another system will follow, DSOP said it before, a SVG. In this version you get an pre-adjusted 4x4box without an selecting option. This is the cheaper version.
But data facts are one point, so it might be better you test it first, some guys don't belive the performance of this system until they tested it themself.
From my opinion it is one of the most efficence 4x4 systems in the base enviroment of the Opel Calibra or Vectra/Cavalier model.