Has anyone ever tried to customize a sub box??

There is a spot where the trunk kinda curves back to the seats, and i thought about putting a board across that and mount the subs in it, would that work?? if anyone has done please help me in figuring out how to do this.

 

lotsa people have, but this may be better asked in the audio forum

 

i have done a custom subwoofer box in my trunk, im trying to give u pictures, i will try back at a later time, i did not make a pice of mdf across where the curve is but i wrapped it around the curve