the are no fascia adaptors for the MY03-06 cars..
There are double DIN universal adapters, with trim pieces. Here is a universal one for 20 bucks that would probably fit.
Amazon.com: Autostereo 182 x 102 MM Universal Double DIN Installation Slot Metal Car Stereo Radio Mounting Frame 2DIN Universal Car Radio Adapter in-Dash Mounting Frame Complete Fitting Kit: Car Electronics
www.amazon.com
If he wants single din, then buy something like this, and use ingenuity to make it fit:
Buy SCOSCHE GM1587B in-Dash Car Stereo Single DIN Installation Kit Compatible with 2004-Up Select Chevrolet and More GM Vehicles: Car Dash Mounting Kits - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
Just because it doesn't say saab compatibility on it doesn't mean it won't fit, it means most people are too lazy to do a real install. And once installed, it looks just fine. A bit of ingenuity and patience is all it takes. Industry standard from Wiki:
ISO 7736 is a standard size for
dashboard mounted
head units,
[1] for
car audio. It was originally established by the German national organization for standardization, the
Deutsches Institut für Normung, as DIN 75490, and is therefore commonly referred to as the DIN size.
[2] It was adopted by the
International Organization for Standardization in 1984. It does not define
connectors for car audio, which are defined in ISO 10487. Head units come in either single (180 x 50 mm panel) or double DIN (180 x 100.3 mm panel) size. The advantage of double DIN is that it has a larger display, suitable for use with
Apple CarPlay or
Android Auto.
[3]
So basically what I'm saying is, if some research is done, one can find a compatible installation kit, that will look pretty decent, and only take a bit of work to install, that will fit the DIN size needed.
If your statement is true, what have the 1000's of aftermarket installers around the globe done to install aftermarket audio/video systems in these model year Saabs?