I don't think you will like the bump from a Bazooka... after having reg. subs in my car and then trying to hook a Bazooka up in my truck, move onto a ten inch in a box with its own Amp and RCAs.
Even though the Bazooka has adjustable bass, when you turned it up, you got the normal speaker music/sounds through the tube. The way they are wired is they use a hot and ground, and a hot and neg. on your speaker wire. An Amp uses a hot and ground, and a pair of RCAs.
Get what I am trying to say here? It's hard to explain... The sound will be much cleaner and the bump will be much better with a traditional system instead of an all in one.