Does anyone know of a good sub box that will fit under the back seat of a 2008 Ford F-150 Super Crew? I have a 10inc JL Audio Sub I'd like to keep. But my old box won't fit now.

I used a JL Audio Stealthbox in my '07 SuperCrew -- very slick product, but a little pricey.

http://mobile.jlaudio.com/products_stea ... age_id=168

SuperCrewSound also makes one; never seen one in person, but it's a lot less expensive.

http://www.supercrewsound.com/commerce/ ... 9&catId=58

i just built my own. but on another forum there is alot of people that are using the supercrew sound boxes. check out

f150online.com