Get the polks.
If you want to learn car audio here is a great forum-
http://stevemeadedesigns.com/home/
I'm _paralyzed_ over there too. There are builds with 30,000 watts and 8 18" woofers. Some larger than that. We've all heard stories of people breaking windows with bass. Some of the stuff over their rips roofs and tears door latches off. Check it out.