Freelander 1 commercial false floor drawer

Hi im thinking of putting a false floor drawer system sort of thing in the back ofmi lander, has anyone done this or know where i can get a ready made one?

I was thinking prob about 6" high to store drills jigsaw screws bits n bats, with maybe an upstand all around which will allow transport of loose rubble, hardcore, sand stuff like that

ideas?, pictures?

cheers