I scratched the fiberglass box idea. Instead, I decided that it would be simpler and easier to build a shelf behind the seat that would support the sub on the passenger side and allow for space for the amp on the driver's side.
Here is what I came up with. It isn't super pretty, but it will do the job. The trunk of my car was never meant to be a show piece, it is there to haul crap.
The shelf is 1/2" MDF and is supported by the hump in the middle and some trimmed down 2x4s on the edges. The 2x4s will be attached to the trunk divider and the sub will be anchored to the bottom of the package tray. Should be pretty solid.
Here you can see where the amp will go.
There will be ample space all around it for cooling and all the wires will come in from behind and underneath and should look pretty clean.
I even decided that I should make everything a little prettier and wrapped the sub in black felt and I will do the same for the shelf.
Stay tuned for more, as I just placed an order with Don at
Sound Deadener Showdown
This is turning into sub/interior sound deadener redo...
Any comments and suggestions are welcome as always.
Andrew