I saw a Mk2 at CES, though it was showing a navigation demo. At least year's MP3 summit there was a mk2 as a huge sandwich of boards covered in fans which was supposedly a Mk2 prototype. Imagine a full x86 PC and you're pretty close.

The Mk1 looked like a nightmare to install: it comes as a head unit (do not obstruct fan, according to the docs), a tuner/amp module (inside the dash somewhere), a battery backup pack (9.6v nicad pack), a power line filter, etc. Definitely more bits than an empeg mk1, let alone a mk2 ;)

Have a look at the crutchfield listing for it, and pick the "what's in the box" option...

Hugo