I've checked as thoroughly as I could (without having the actual pieces in my hand), and the answer seems to be NO.
I am in the same situation. I sent an e-mail to these guys and they said they are putting the finishing touches on a storage unit that will work with the sub. It also seems to be a bit better design on the whole, so this is my planned "eventual" solution.
Good idea on Target. I was eye balling all my wifes storage containers to fab something and she said "NO". Of course with the storage in the center console who needs more? It's like the bat cave in this thing.