Thanks guys! I had some help from my dad though so I can't take all the credit, he's done quite a bit of wood work in his time. I pretty much have the largest enclosure I can fit under the back seat in my truck, the seat barely latches down, but it still latches down. I will be gluing it tomorrow, we bought some liquid nails at home depot earlier tonight so I guess that's what I'll be using, oh and some caulking once I glue it together, there are some uneven spots between pieces within the box that I would like to smooth out if at all possible, I also am just going to apply caulking tom make sure its 100% air tight.
If you guys want to check out my build you can do so here,
http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/515849-1999-silverado-alpine-build.html.