I plan on having the box custom made and ported through the rear seat (there's a fold-down armrest in the center with a "port" to the trunk). The install is being done by a friend of mine so I'm not to worried about the install on account that customers include the Mountain Dew Hummer and the 2by2.net Lamborghinis. But, I'll probably do (2) 12w6v2. Thanks again for the thoughts.