Stock sub box out of my SVT. It's modified to accept most 10" subs. It's also covered in a bunch of dynamat xtreme. You'll need to find your own carpet cover for it, but the mounting bracket is included and I'll throw in the factory amp if you want it. Make an offer, I just want it gone.
I can take a picture for you, but it wont fit behind the factory carpet. There is a MDF ring that is 1" or 1.5" (can't remember) attached for mounting the sub. You would need to cut the carpet to fit it. If you still want it, let me know and we can work something out.