Pretty sure you are asking for the MSP Sub Enclosure ( Keys "A" and "S" are next to each other LOL) as I may be getting rid of the one I have for the MSP I sold to my bro if he doesn't want it. I noticed you are about an hour away from me. It's just the sub enclosure with the brackets only. If so, let me know so I can ask my brother if he wants it and I will let you know tomorrow and we can go from there to conform to the rules.
I've got 2 that I'm selling if you're still interested