Transplant all to another vehicle would be extraordinarily complicated and difficult. The factory system has data lines that tie into the BCM and security modules for speed based volume adjustments, security, vehicle chimes, etc. The amp is specifically programmed for the H2 (even though the same Bose amp is used in other models, the programming is specific for a models acoustics).

For the van it would be far easier to just put an aftermarket system in. On the H2 you can change the stock head unit itself while retaining the factory amp using a couple of interface modules to make the aftermarket unit compatible and retain the chimes and steering wheel controls. Many have done that. Replacing the sub of factory amp is a much larger project since the amp is on the floor under the console and the sub is at the front under the console so all the actual speaker wiring is also under the console....

 

I didn't know about data lines connecting to bcm an security modules. however I only want to reuse the speakers an amp. an get another head unit w/ NAV.

I have a 07 saab 97x 5.3 it's like a minie hummer I swapped in a new head unit it needed a aftermarket module RP4-GM11 to interface w/ saabs orginal speakers chime ect. I'm assumming this H2 has this same module, also needed a adaptor for the radios coax wire.

vans radio is weak:
maybe just reuse the H2 speakers mite be simple, whats appealing is the small sub. (my van is a RV can't sacrifice any inside room for a 1 cubic ft. box).
I've read these bose speakers are uquince where there input impedance is one ohm where normal after market amps you only have 2 choices 2 or 4 ohm.https://www.crutchfield.com/S-DKHRVN...82ede223f8cdd0 I believe the 1 ohm delivers twice the power to speaker compared to the 2ohm an four times the 4ohm.
your probaly right all after market would be easier thanks

 

Bose speakers are high quality. I have the originals in my '07 and all still sound great. I also have many 20+yr old Bose speakers in my home & garage, sound quality is amazing no matter how much I increase the volume.