looks pretty flexible (install-friendly) to me. they even provide you with a factory LCD monitor location. get one without the factory nav and put your own 7" LCD monitor there. for audio, you can either feed the carPC audio into your factory radio or bypass it altogether and feed it straight into an amplifier.
I can picture a nice dual-monitor setup for that car as well. a primary monitor in place of the factory radio for front-end /audio control and a secondary monitor up top (in the factory nav location) for carPC navigation.