I'm not messing with it. It's a little difficult because if you get the bose option, its proprietary wiring and you basically have to rewire the entire audio system to expand on it. Honestly I think it sounds fine the way it is.. Its better than most stock systems.
I was wondering if it would be worth it to put components up front and a 8" sub in the deck. Then run both off a 4 channel. I don't want to lose the trunk, but wish the sub was a little more prominent.