I bought a Nissan Armada last summer...and I love it. It's got the upgraded Bose 6CD
sound system in it which, of course, sounds like crap. Unfortunetely there is no
easy way for me to upgrade. The sound system, navigation system, DVD system,
even the heating/AC system are all integrated into the same central console
and tinkering with the head unit is bound to screw something else up (and probably
void my manufacturers warranty as well).

Now I'm stuck in my dream vehicle with a subpar (but listenable) car stereo.
There is no way I would risk a complete gut and restart with all these compenents
tied together...at least until my 3/50K warrenty runs out anyway.

I've read some tricks on an Armada website about stuffing poly-foam around the
subwoofer under the driver seat to add more bass. I may or may not try that.
Skepitical about how much it will help. I've read on the site that the Bose speakers
are wired in a bizzare series configuration that makes exchanging the drivers
with normal speakers difficult...if possible at all.

Before you buy anything, investigate these issues if they are important to you.