i don't know of anything being produced commercially. being a jeep has a mounting point on the front of the w/s frame, it is a easy tie in.
the light mounts i've seen a a bronco are usually welded on. if it is screwed in, it just opens up a spot for moisture to get into. the frames already have a tendency to rust. you'd just want to be careful to not help it out.
i've thought about producing a light mount for the w/s frame, yet haven't come up with a design i like enough to do that's cost effective. i am trying to help the bronco, not accellerate it's extinction.
any ideas out there?
let us know what you come up with
nick