Ok so i want some more sound out of my car, like the rest of the neighborhood to hear it. The very first thing i did when i got my car 2 years ago was to put a new alpine Cd player and 4 alpine 6x9 's in it. It sounds great but now i want to add some subs, and give it some bump. I also realized that the way the back speakers are setup is really dumb. They are facing up not towards the driver and they loose sound. Any suggestions on where to put the subs without throwing a big box in the back and any idea on speaker config??