Well I just got a 2k1 Maxima SE with the $799 Bose system and have a couple of questions.

1. Is the entire system Bose or just the speakers?

2. Is it possible to get any better kick out of the stock sub in the rear deck; possibly enclose it in a box of itself?

3. I would like to swap out the stock speakers; i.e components up front and coax's in back with Polk components. Would this sound better? If so would all I have to do is a simple swap?

Thanks in advance for the help!