Originally Posted by Beaner

I had to use every nook and cranny of space to get mine to be close to 1/cf without making the floor too high. There is probably enough spare room under my floor I could have stashed the amp under it out of sight. (boarder patrole does not like false floors when crossing the Canada/US boarder)

Just see where the sub will fit best in the floor, get a rough length and width measurement and clearence for the magnent from the locations. It is easy to adjust the hight to get the correct cf. If you are making seperate sealed boxes it will be easy. I wish I has my pictures... as for supporting the unused portion of the floor just make a little frame whatever hight you need to be flush with the top of your boxes.