Decided to take matters into our own hands and redo the box that the shop insufficiently built. New specs are as follows...
6.9 cubes net. Tuned to 33.6 hz. 96 square inches of port. 21 inches in length.
For my two Zv3 15's going in my Scion TC.
We removed the back uprights of the back seats. Basically the new back of the back seat is the box. Get to leanin' on it if you want to cram in. Port fires forward into the cab. The L shape comes fom having to rise over a lip when it transitions from trunk to the back seats.
45's on all corners of the box. Reinforced heavily.
Final touches will be made tomorrow as we put it in the car, mount the amp to the back (SAZ3500) and wire it all up.
STAY TUNED! Please comment w/ opinions!