Thanks for the response! I had them in my last truck and loved them, I was surprised to find that Silverstar wasn't offered in a 9140 or that Ford used an uncommon bulb size. However, you want to look at it. I'll keep in mind the trick letting the air keep em' cool.
2008 5.4L XLT Supercab 4x4, remote start, K&N drop-in air filter, Flowmaster 40 series dual exhaust, Truxedo tonneau cover, Auto Spring 2" level kit with 33's- LT285/70/17 Kelly Safari TSR, Silverstar headlight bulbs and fog light bulbs.