I built my own (sprayed with rattle can truck bed liner) that fits under the starboard rear bench. It's a tight fit, but that's what I was going for. It pounds pretty hard. Not nearly as hard as Steve's (aguyindallas) setup (which is insane by the way), but I'm happy with it. BTW, I built it to fire down, in hopes that it wouldn't make the rear seat rattle to much, but it kind of does, especially since it's a more powerfull driver, I'm still working on a solution for that. End of last summer it was a towel, between the seat frame and the seat.