Thanks to this great thread on JNC i thought a H4 conversion for my 240Z headlight would be something useful. But as a real JDMjunky i was looking for a Japanese version istead of the german Hella headlights and therefore i measured my headlights and they’re 180mm (7 inch). But when measuring i figured out one of my cars already had a Hella H4 conversion: but they’re slightly rusted and aged and some oldschool design, so i still want to replace them. Now what i’m curious is the Hella’s have a small positioning bulb: The other car also had some H4 conversion by an unknown manufacturer, but it seems without…