Used some old computer cases and made sub boxes. I also closed up the last of the holes in the back. I need to glue up the joints but that is no big deal to finish. I also closed up a bunch of small gaps in the floor that don't photograph well. The sub boxes are not calculated in any way so the size is probably not right for the speakers but it will be good enough to make noise. The gas tank is visible in the pictures I left the cover off it for these pictures.