Need help with oddshaped sealed

[solidcrowd]

I'm looking for a project to do when i'm board and i was thinking of building a sealed box that looks like this.
http://i187.photobucket.com/albums/x247/solidcrowd/untitled-2.jpg

First of all i want it to be able to fit 1 or 2 15's in the slanted area because the most hieght i can get out of my trunk is about 14 inches.

I'm also wondering how many cu.ft. this enclosure will be. I'm thinking of throwing 2 maw-15's in here if there is enough volume.

[solidcrowd]

anyone

[DeViOuSoNe]

uhh how much depth and width you got? Go to REaudio . com and on there you will see a Sub box calculator...Works pretty good

[solidcrowd]

i have
14inches high,
32inches for the width
and 28inches for the depth.

I just need to know how to figure out the top piece and the front piece so that i can have as much airspace as i can get and beable to fit 2 15 inch subs on the slanted piece.