Hey guys, I have been reading your posts with great interest and thought I would pass this along to you all. As the original owner of a 1991 350SDL W126 whose radio bit the dust many years ago. I replaced it with a Becker 220 grand prix ( It does have "Porsche" silk screened on it) and added a 10 disc CD player. The install was a no brainer because I was supplied with all that was needed to install the same without cutting any wires. The supplied adapters allowed for the use of the external amps and console mounted fader. The guy who provided the equipment is:

http://www.swstereo.com

I had met the owner through the service rep at my dealer. He explained that he was the guy the dealers used when they wanted to, at that time, upgrade the audio systems in the new cars. My system has been working flawlessly with only one regret. I do not have and elegant way to play my I-Pod.

I hope this helps. Noodles