I have a brand new never used JL Audio custom sub box made especially for 2004-up Ford F-150's. nothing is wrong with it, I bought it and decided to trade my truck in and got the new Tahoe. It is covered in the grey carpet. I paid $550 for it brand new and will let it go for $350
http://mobile.jlaudio.com/products_stealthbox_detail.php?fit_id=1512