ok i'm look at getting this (http://www.audiosavings.com/products/Car-Subwoofer-Amplifier-Packages/KICKER-12-S12L7-2-SUBWOOFER-SUBCLASS-D-MONO-AMPLIFIER/08S12L72---QCA3500D---XK4B1.aspx)setup. and i was hopeing some one could give me some help/ pointers about a good box or best dimensions on a box for it. plus any other little tips about it. this is my first system, so i could really use some help.