I traded in my 2009 Tacoma and removed all of my audio equipment. I included the box in a general For Sale post, but I figured it might get more action with its own thread.
Anyway...this is a 4 month old box from Mr. Marv. Trust me, these boxes are as good as advertised. It's designed to hold a 10" shallow mount sub and also has an amp rack. You have to remove the storage bin on the passenger side, but get to keep your storage behind the driver's side. I finished it with bed liner. It currently has a 10" Rockford Fosgate sub (P3SD410) in it, which I will sell along with the box if interested.
Marv doesn't like his prices mentioned, but trust me when I say this one offers considerable savings along with it being ready to ship immediately.
Box - $100
Sub - $50