That's been posted before a couple of times. I'd be really surprised if it's orderable in the US -- but it would be nice! Note, Bavarian Auto offers nearly the same kit, except it's a steel wheel and doesn't come with the cover. Tire and tools are the same.
It doesn't take up as much space as you might think in the trunk, as the wheel/tire is only 4" thick. The tools can go in the recess under the trunk floor, there is a spot designed specifically for them.