I've yet to see any aftermarket LED offerings that are the correct light color (they all are a bluish 5000-6500°K, which 'looks' very bright up close, but has an inferior ability to penetrate deep into darkness).
I would suggest doing the 2000-grit wet-sand & polish procedure on your lenses if they are hazed up, and if that's not enough, add a set of halogen auxiliary driving lights.
An HID projector conversion is another option I've seen where you can get properly-colored bulbs (4000-4200°K), though HID can be 10× worse than LEDs when it comes to radio interference (especially if you have 2-way radios). Don't just stick HID bulbs in your stock housings though, you need to use actual projector lenses to not piss off everyone oncoming.
Search back a bit on this topic here, I seem to recall someone posting they just did such a retrofit on theirs within the last few months or so.
Edit:
Here it is (was a recent thread-revival)
http://www.therangerstation.com/forums/showthread.php?t=141424