audioholic
5,000+ posts
not a moderator
The XXX's require 4ft^3 each ported, before displacement for the drivers and ports. You'll need at least 10ft^3, probably even a bit more, depending on the tuning freq. The lower you tune it, the longer the port length needed. The longer the port length, the more volume it uses of course. I think you'll have a very hard time fitting that, and amps, in an extended cab truck. It would require a wall at least Im sure.
