It pays to make friends with your friendly neighborhood Porsche Master Tech--they always seem to acquire the wheel hangers that were standard equipment in the 996's. I have four (given to me by a "friend" who saw me changing wheels at the track, one day).

I do think at least one should come with the car, even though there's no jack. Glad I've got mine (and all my assorted track-junkie goodies for changing wheels--low rise jack, cordless impact wrench, padded impact socket, and Snap On torque wrench).