I have my own black 9-5 Aero MY02 with the aluminum finish dash. I started my project like 2 years ago and have gotten nowhere since we bought a house and "ordered" a kid. However I have all the hardware and I had it mounted once. The 629 lilliput fell out durinc accelleration etc.
Since then I bought the HQCT and I have a half finished 4 channel balanced line driver which is going inbetween the PC (or the HQCT which has front and rear output) to the stock amp (AS3 stereo so the amp is quite capable).
Basically I'm stuck at the "integrate in dash" problem. From Saab I bought a piece of plastic that you are supposed to put in the 2 DIN hole when you have NO head unit. I cut ot a hole for the lilliput front piece, but I havn't gotten around to mold them together. Do you have more info in the brushed alu case from your pics? Do you have a saab part number for the NAV bezel?
I've also hought about the sterringwheel controls. We need some way to measure the resistance between the two steering wheel wires and have some USB device reacting on it... A USB resistance measuring device would be great! to bad they don't exist.. :'(
Atleast we are TWO saab owners with similar plans!
I now that Maximus (i think that was his name) also had a Saab 9-5 project but it was more elaborate with night panel function and more...