I have a box that fits behind the seat of a chevy single cab, for 2 -12s. It has spacers on it, if you have deeper subs, or you can pull the spacers off for shallow mounts.

Asking $50, would rather not ship.

ALso have a custom built big box for a single cab dodge ram, with the grey factory carpeting. Its nice and big, and was holding two 6.5-7" deep subs.

$75, not shipping it. It takes two to carry it comfortably. Add $25 for the two subs still in it. Dents in the alum. cone, and two broken terminals, but still can be hooked up and bumped.