I've been thinking for a long time about solutions for us 1ga guys. Here's what I'm thinking. Our lights are 4"x6" sealed h3 headlights which can easily be converted to H4's using a new housing and a bit of splicing. Could housings like these here...
eBay Motors: CLEAR H4 HOUSING HEAD LIGHTS 4X6 90 91 Eclipse (item 140255468613 end time Aug-11-08 21:36:05 PDT)
...be used in conjunction with the h4 hi/lo HID kit?
Dustin