Heres a fiberglass and mdf box that I made last summer for a friend. The base is fiberglassed and fits perfectly under the back seat of a 94-98 Silverado, not sure about any other years but it might. It is around 2.5^3 sealed. There are currently 2 Rockford Fosgate 10in P1's in the box, with warranties and they are about 2 months old, never ran at more than rated 150 wrms. Sounds pretty good and its perfect for the amount of space you have under the back seat. I don't really have an references because I never sell anything but I can guarantee you aren't going to get ripped off or anything. The box is pretty well built, not the best but its good. PM me for lots of details.
Box and subs asking $150+shipping obo
Box only asking $80+shipping obo
Subs only asking $80+shipping obo





Box and subs asking $150+shipping obo
Box only asking $80+shipping obo
Subs only asking $80+shipping obo





