Looking to buy a 2014 Journey SXT within the next couple weeks. Doing some research I did find the 4.3 system it has in is not removable, which is disappointing as I have an AppRadio 2 which integrates well with my iPhone and android phones. I've given up on trying to make the appradio work and relocating the 4.3 as the Journey only has 10k miles on it and I don't want to mess up the warranty. I would, however like to integrate my existing aftermarket amp and subwoofer to the setup. I've messed with car electronics for the last 10-15 years, but never with a system that's so integrated with the car. I've seen posts of some PAC adapter which will give low level inputs, but it's nearly $70. Can't I just wire into the rear speakers with high level input, or does the Journey somehow prohibit this? Is the Journey pretty straightforward as any other install with factory radios, or is there anything special about this vehicle?