I plan on putting a 16 inch woofer in my IS. I was lookin to get a box thats about 2.5 cubes including the port displacment, give or take a couple of inches. I was just wondering what size boxes other IS drivers have in there car and if they have any pics and ideas? I was just going to have the sub aim straight back. Maybe in a wall. Would appreciate some pics though of your boxes. Thanks in advance for your help.