04XLT4x4

I've been in the same boat, looking forever to find a setup that will fit under these seats without having to go to a custom box. I took a swing at it when I found a good deal on this Rockford Fosgate P3L-S12, and it just about fits perfectly. Probably a half-inch bigger in any direction would be too big but for right now looks great! The 10" version has the same depth measurements but the box is not as wide and I think it would actually work better because it would keep the woofer further away from the hump in the center of the floor board. The only way this would fit is with the sub facing down. The lip edge of the protective frame around the sub sits on the hump in the middle, but only a small section makes contact, the rest has about 1-2" of space below it.

ericgivens

I have the pro box with a single 10" jl sub. Love the set up.

MikeyDubs

What box is that?

Whapt68

Pro box. http://www.proboxrocks.com/