I noticed when I ordered mine that they offer two different versions: the "base" version with the light on a bracket designed to show through the spokes in the spare (like Tharb5111 has), or the "sport" version that comes with a mast to mount the third brake light above the spare (like Shootingjeeper got).
I bought the "sport" version too, but after getting it in the mail I noticed the holes for the mast also line up with holes on the passenger side of the mount, near where the hi-lift jack and shovel are designed to go. I'm thinking about mounting the mast there instead with my CB antenna attached to it (to keep it nice and high), and using a completely different third brake light that mounts into the empty two lug holes in the wheel.
By the way Shootingjeeper, that bracket you fab'ed up turned out really good.