Just wondering if anyone has replaced the factory sub. I'm upgrading the stock speakers- 6.5" seperates in doors, 1 10"sub behind seat. I just saw a 6 1/2" JL sub i was thinking about using in the factory location. Anyone ever done this before? If so was it even worth it? I know there is a JL Stealthbox that fits this location but you lose the AC for the back seat so I'm not interested.