I wish you were closer to Madison WI, cuz I'd love to have you upgrade the stereo in my 2005 4.8. For all my vehicles, other than the 2 X5s I've owned, I've had the great folks at "AMS" (here in the Madison area) install upgraded audio systems. However, having taken both X5s out to them for evaluation, they seem reluctant/unenthusiastic about upgrading an X5. I would love to hear the Dynaudios in a vehicle installation.
Dave