Well, I went out and tore up the car looking for places to mount and that panel in the rear is all one piece
and there isn't really anything solid behind it to mount it to.
Here is my next idea:
upright between the seats. it just barely fits, and I can't recall ever needing that space when trying to fit cargo in the car. it doesn't interfere with my elbow during shifts, but might rattle the center console(?) What do you guys think?
Here is a side shot, as you can see there isn't really room to jam it down behind the seats, its just barely too big
-Matt