sub box idea, any one done this?? Options

[Valo666]

Hey, im just wondering if any one has done a box like this or not. Im thinkin of duin 2 12's in the back but i still want to retain most of my trunk space and also my spare and also have the taunue to close fully. So i was thinkin of duint this..Making two coustom boxes out of MDF and fiberglass to mould into the back sections of the trunk on a hatch. Like the little sections that indent at the very back of the trunk, like where the door is to get into the tools for jacking the car and all. Doing the 2 boxes on there and maybe duing the amp either onto the back plastic, or just mould it into the box or just mount it on the back seats. Any one done a box/setup like this?? and any one got pics??