That sub enclosure is larger than the OEM enclosure in almost every dimension. It's deeper, it's wider, it's taller.

I understand and agree, if an off-the-shelf one could be made, it would be great. We do an off-the-shelf box for an Acura, for example, but it is a LOT simpler than this box due to the shape we used to get the extra volume.

I'm sure that if JL ever makes a Stealthbox, it will be shaped like ours (but made at a production glass facility). (Then we'll see what theirs costs. I don't expect my price to be "right". It will be fair, though...)