[f5fstop]

I guess my confusion on the adapters is that the websites I'm visiting show the following:
Peripheral GMAH24B - Now you can replace the factory radio in your OnStar and Bose equipped GM vehicle and maintain all of the Bose amplifiers, Bose speakers, and OnStar functionality. For model year 2000-2004.
and
Peripheral GMAHCM - This one sounds correct, except for the model years.

Is it that the website has not updated the information, or is there another adapter required?
In addition, when they say Bose, do they also mean Monsoon? I guess I could research the GM schematics, but to see if the Bose and Monsoon have similar wires for connection to the amplifiers from the radios.

So, if these are correct, all I would require would be:
Receiver
XM Tuner
The two adapters
Antenna adapter
Rear Camera
Two-bottles of Morgan's Rum
Face plate
Another bottle of Morgan's Rum

(Actually, probably a lot easier than the mirrors.)