need some help need a template

Now I just need to decide where to put this freakin' 12" subwoofer.

It just goes in the trunk. Here's what I did in my '68. I have no insulation on the fiberboard between the seat, it might be wise to put some there. It may save from gassing myself when i have to drive with the trunk open.



I keep intending to make an even smaller box and shove it further back, but this one i made works fine. I made the grill cover out of 1/2" pvc board and some time...