I agree with eddie money, I currently work at a national retail store. thats is typically the first question i ask people, followed before a response is giving that the basic system at a big retail store will be between $ 800-1,400 USD. this does not included any custom labor for a box.
As for the bazooka the only thing there are truly good for is saying " yea I got a sub and amp in the car" besides that the over all quality of them stinks. esp now that there main factory in LA got flooded; from what I was told. I also caution against the NOS bottle because too many people on here will flame ya saying its rice.
If your are looking for a little more bass the bazooka would be just "ok", but you could get over all better sound by upgraded the factory 6.5" speakers(Component speakers up front, coaxial in the rear) with aftermarket ones like the Alpine Type Rs, Rockford Fosgate, (sold at Best Buy) Infinity, Polk audio, (sold at Circuit City) or the Pioneer TS series TS-D161 coaxial, with the TS-C 160R, which are my personal favorite. I'll be adding those to my G/Fs car soon.
During the next few weeks I will be building a custom enclosure for a Kicker L5 12" that my girlfriend bought from a local Circuit City if you would like as I'm building the box I'll take all the photos of the rear coming out and the box being constructed and send them to you if you wish.
With all that being said its your car, your money, your choice. I'll be more than glad send you any information on the above speakers if you PM me.