Sub question

CrimsonTide

Hey guys,

I've read a lot of the posts on here and searched the threads. I have a few questions for you guys if you don't mind.
I have a 2009 Bose system. I know they get a lot of grief but I think my system actually sounds pretty good - not loud enough and not enough bass, but pretty decent. Eventually, I want to replace the head unit, add an amp and replace all speakers. In the near term, I want to add some bass.

1. Is it a pretty simple deal to ditch the Bose spare tire sub and add an amp and sub?
2. Any comments on the WickedCAS enclosures?
3. If I go with a Z enclosure, 1- 12", 2-12", 2-10"? What's the best for the car?

It seems like it wouldn't take much for this car to pump out the bass. I like rock music, kids like radio crap, etc.

I appreciate any feedback~!