I found a sub box that holds three 8's and its 100% fiberglass anyone uses a box like that here's the link any help on this kind of box would be great
http://www.lightav.com/car/boxes/bas...0350truck.html

 

do you know what they want for that box?

 

I don't know, maybe its just me but the finish on those sub enclosures doesn't look so hot. Especially some of the pics further down the page. Maybe they were taken before the boxes were given a final sanding and painted.