Well I am not thinking of the normal swap the single sub idea. I am wondering if you can switch to an aftermarket box, while removing the factory sub/box. If I can what would be recommended? How would I hook it up? just extend the lines? But in short I would like more bass but without changing out my whole system.

 

I don't recommend using stock wires for an aftermarket sound system if that's what you're thinking about doing. That wouldn't be smart at all...

 

x2. your 2 best options are to either swap the stock sub with an aftermarket shallow 10 and use an aftermarket amp or to go with a complete aftermarket amp sub and box