First time that I have logged on for ages...............
Yes I have the Abbott kit on my 9000, now well over 200,000 miles by the way.
A couple of important points, when I got the kit it had original Saab discs and pads and was disappointing. It needed Brembo discs and DS2500 pads to make it work well. Standard sized Brembo discs and DS2500 pads would be as good as the big Saab discs and standard 9-5 pads, in my opinion.
To fit the big kit the brake disc backing plate (splash guard) must be removed. I kept the centre from the original Abbott modified disc and have used it as a template to drill the holes in the Brembo discs.
The tricky part is making the mounting brackets. You must get it right as their is very little clearance between the caliper and the wheel. I also think that the hydraulic fitting in the caliper may be different as mine have an extra bit bolted on.
I could probably provide photos if the rain every stops.
If you use DS2500 pads I would avoid drilled or grooved discs. Plain are the best with these pads.