I can't vouch for them, but for headlights, the LED replacements from retro-solutions.net [Crees?], marketed to big rigs using XL? style sealed beams, are one possibility. Aside from the HID option, if the fitment works, you could go to the OEM-style clear 9007 casings and use 9007/HB4 bulbs [halogen or xenon, like the Phillips XP] with a harness upgrade from various vendors. My 2002 has the clear enclosures; I just upgraded with a harness and these bulbs and I'm pleased with improved light intensity and pattern.
2002 F350 Supercab Lariat 7.3L 4x4, 6 spd. AIS, Bilsteins, B&W Turnover Ball gooseneck.
Better Half's daily driver: 2006 M-B 320 cdi