That is truly a good deal, but I personally would avoid upgrading to a stock Aero shock now that I have the Bilstein HD's.
I'm running stock Aero springs with the Bilstein HD's and the ride comfort and handling was improved so much I was SHOCKED. It rides better, handles better, stops better, it literally is just better. They accomplish this with a variable dampening system that is soft when your driving around, but when you push it, it stiffens.
What I would do is get just the
anti-roll bars from Genuine Saab, and try to find Aero springs from a junkyard since they never go bad, and get the Bilstein HD's from
www.shox.com.
Or if you don't mind having a little less ride comfort, but better handling, I recommend the Eibach lowering spring with the Bilstein Sports.
Regardless, that kit will get the job done, and will offer a huge increase in performance over your stock suspension. So if you don't fee like paying extra to get the Bilsteins, this kit is definately the way to go.