I don't know if anyone has build one yet, but I am going to use Eminence's recommended enclosure for the low bass box just as an experiment. It will be basically square with the vent converted into two round vents.
I'm hoping that it will rattle the ceiling tiles like it's older brother the LAB12 mounted in Danley's LabSUB.
I have not heard of or seen anyone putting it into an equivalent to the LabSUB yet, THAT would be an awesome stadium box!
I'll try and post the build of this box and it's resulting real-time specs when completed.