I have the following items for sale.
Crystal Mobilesound CMPX215 $275 used +actual shipping paid $450 new
comes in original box from CMS and has very little play on it.
http://www.crystalmobilesound.com/subwoofers.htm (this is the dual 2 ohm version)
Audio Control MATRIX line driver...
Well anyone will tell you 12 over 10 in MOST applications.If you have the room then use the 12.If you dont, send it back.Getting a bigger box,Shouldnt be to hard to do.Try this forum or your local car audio place.......