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Some have reported good results with installing new Silverstar Ultra bulbs.
After reading the pros and cons of retrofitting and results. I decided to go with the SS Ultras. Hope to have them in this w/e.
On another note, when I dropped the rear I thought I would get 'flashed' by oncoming drivers. Not so! So the headlights are probably set to be safe when you're towing/hauling, which I seldom do.
Philips X-treme Power bulbs are a pretty big improvement over the stock bulbs.
However, my daily driver is a 92 Bronco so the stock headlights in my 2011 seem excellent to me.