Hello and a warm welcome to TorqueCars. Good to have you with us. There are not of alot of mods advertised for Saabs but there is still plenty you can do to them.
Suspension upgrades seem pretty popular. Turbo upgrades and remaps are also top tips as these engines seem to respond well to remapping.
You'll have to get your post count up to 10 so you can post us some images.