subs on the sides of my trunk

I want to install 2 12's. One on each side of my trunk. One side comes empty and the other side has the spare tire. Am I making myself clear? I want do still have room to put in my t-top. Does anyone know where or who I would talk to about doing this. The empty sides seems like it would be easy. But I need to custom the other side. Also, someone else had to think of this are there pictures out there?

Sub Thump (http://www.subthump.com)