The Opel and Saab aftermarket items might or might not work. Even though they're the same basic platform there are still differences, like the engines used.
I find the new generation of platforms are much more flexible than the older ones which is probably why they serve so many cars but it could create a little nightmare for aftermarket parts compatibility.
Well I was just surfing the old web. I emailed Eibach. They should get back to me by the new year. But H and R has something they have a set for 349. does 1.5 up front and 1.3 in the back. Not to shaby this would make the G6 really aggressive looking.