Securing box to a false floor

[purplesyrup]

One way is to weld bolts to the floor pointing up, cut little slits for carpet so they can poke through, carfully measure how you spaced them, drill holes in the bottom of the box matching the bolts welded to the floor, take sub out, seal holes and bolt box down from inside the box, then put the sub back in. the box is officailly one with the car. Another note, some insurance companies don't cover anything not "bolted" to the car, this solves that problem. from this point, use allen head screws to mount the sub, or something else that the crackhead going around stealing stereos wouldn't have and bada-bing. Throw an extra curve by using 2 or 3 different heads on the screws, so even the most prepaired thief will be out of luck. Welded bolts will also not allow any sliding .