bumpin buick
5,000+ posts
Science is everything
Easy I have done several installs like this, use card board to make the model. Put the cardboard in the trunk and cut it with an exacto to fit until you have it the size you want, make sure to split the card board into two or three peices (cause you wont be able to fit the one peice into the trunk obviously) then trace it to wood for the false floor and wall, usually I would build boxes and amp racks then do the false wall around it and have it connect with fabric whether it is carpet or vinyl