Folks, about the Bose...
I am a big Bose fan, at home and in some of our cars in the past (sigh, but not currently) -- but you need to understand this; Bose does NOT make the head unit on any vehicle - ever! They make the speakers, and add some circuitry to the mfg's head unit, change wiring, etc. for automotive systems. They tweak components for each vehicle to accomodate the unique acoustics of that vehicle. This may all be a bunch of hooey, but they always sound great to my ears.
From the FAQ are of the Bose web site;
.................................
"Can I buy the parts to add a Bose music system to my car if:
A) My car?s manufacturer does not offer a Bose system as an option?
No.
B) My car?s manufacturer does offer a Bose system as an option, but I didn?t get it when I bought the car?
No.
Here?s why: Each of our automotive music systems is custom-tailored to take advantage of its particular car model?s acoustics. It is engineered as part of the car itself, and installed on the car manufacturer?s assembly line. During installation, the system?s elements become part of the automobile; even the wiring can be different than you find in traditional music systems. And, of the utmost importance, special acoustic checks and balances are performed to ensure that the sound quality meets our standards. Thus, we do not sell our systems or the individual parts as aftermarket products."
..........................................
That said, I wish my AV had a Bose system, but IMO, you'd be better off going to a custom stereo shop and buying a nice aftermarket system (instead of trying to recreate the Bose) My two cents...