I have a 2004 X4 4.8IS w/ NAV & 6CD Changer.
If I purchase the parts can anyone tell me based on experience how difficult it is to install? Are there .pdf's out there that walk through the procedure? Are there any special tools that I will require? Just trying to save $200 by having the dealer comlete the installation.

- Thanks!

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- 2004 X5 4.8IS, BLACK
- 2004 M3, BLACK