And let us know how your CD player likes the bass...
and on a side note - that would be fuggin awesome... every time you wanna switch CDs you gotta pop the trunk and look at your sub for a good 15 seconds in awe...
i would do a false back n the back of the box with some 3/8's wood spaced out another 3/8's to hide the wire right at the sub (so he would have 3/8's empty space under the 3/8s peice)and take it whereever you wanted....also would sink in the sub alittle to take emphisis off the screws