Hi,
you can have the CD changer and Sirius tuner. All you need are the two cables from and to the CD changer and the Sirius tuner module.
You can find all of the information at :
http://www.janixworld.com/x5/Sirius/
Extension Cable #84-11-0-141-977
CD Changer Cable #84-11-0-141-9781
Sirius Installation Kit for X5 (E53) #84-11-0-141-976
The cables are somewhere around 12-17USD and the install
kit ~50USD. I believe you may not need the extension cable but
you may want to order it just in case....
The E53 kit includes also mounting brackets etc... for the Sirius
tuner in case the dealer did not install the tuner in the location
where it should be (it should be where the TV module is normally
installed).
- Jan