Forgot to consider LX roof rail is shorter than LC.haven't tried them, but those parts are pretty similar (between the LX and LC) so i'd be surprised if they didn't bolt up. The biggest problem, i'd imagine, with using this on the LX OEM rack would be that the light would sit about 10" further back on the roof. Maybe that doesn't matter depending on your goals. Also, this could possibly be resolved by making the bracket longer and hanging the light out in front of the rack. That might look weird though, not sure.
I will give it a try and see...thanks!