Working on designing my down firing sub box for my 2012 access cab and i'm going to remove the plastic storage tray that is between the two rear seats. I would like to mount the sub box to the tray bracket but i'm not sure on how to go about it. To the people that have done a similiar set up, what creative ways did you mount the box to the bracket? did you have to fasten it down when the box was partially completed or when it was full completed?
pictures would be helpful if you have them