I have a professionally made sub box and amp rack for a Tacoma Double Cab. The sub is a JL Audio 13.5" TW5 shallow mount sub. I also have the dash kit and harness as well. The amp rack was made to hold two Alpine PDX amps, but can be used for other amps. Will take $500 for sub and box.
The setup performed great. I had a PDX 1.600 running the sub. If interested I could sell the entire setup. I also have a Alpine 7897 Head Unit that I would sell as a package deal.
If interested PM me your email address and I can send pics of box and equipment.
Here is a view of the box: