Oh, opinion's, other ideas, and sketches, are more than welcome.
This box must fit in my van, a work van / beach blaster / mobile theatre / SPL vehicle. With this box in it's daily position (on it's side, facing rear, pushed up against seat, port plug in place), I'll still be able to load 1000 pounds of batteries / parts on workdays. Or open the rear doors and light up the beach for the weekend. Or flip it on it's back, move to rear doors, pull port plug, and BOOM.
You get the idea
I thought about putting up a wall on my "C" pillars (just in front of rear wheels, where sliding door meets up, right behind the middle seat, I have no rear seat) and simply free-airing the sub, way up high. It would work, and look ultra-cool, but I don't think it work well. And it'd move me up a class in dBDrag's, due to the wall, and I'd never be able to come close to the walled guys if it's way back on the C instead of the B pillars.