That was one of the reasons that I did not order the factory fogs for the Leg. They are really sucky and I do not know of any easy upgrade like the available PIAA driving lights for the Impreza Bumper. I am planning in using the black plastic "inserts" to mount a set of either Hella's or some PIAA's in the front bumber. From what I understand the wiring is already present from the factory.
Good Luck.
Tim