I am reconfiguring my lights. I currently have IPF headlight housings with H4's, OEM fogs, and Hella's on the windshield.
The Hellas are moving to the bumper since they are a fog pattern and not too effective on the windshield (plus their ring of light kills night vision). The windshield is getting IPF driving lights and another set is going on my soon-to-be-rebuilt winch hoop/grille hoop. THEN, the H4 bulbs are coming out and HID 55W hi/lo beams in 5000K temp range are going in. IPF's headlight housing is metal and has thick glass. In talking to IPF, they have run up to 170W bulbs in their housings with no issues. I'm not going to tempt fate and go THAT high, but 55W HID's with a wiring harness will do nicely.