They do make them here in Japan, but the prices are umm...freaking expensive. Cibie makes two sets. HIDs for 198000 (appxUSD1580/CDN2483) and halogens for JPY98000 (appxUSD823/CDN1293). Here's a link: http://www.cibie.com/Page/CIBIE_HID/LEGACY_BH.htm
They make them for the BG, as well. HID-JPY228000/halogen-128000. Why the BG ones are more expensive is beyond me.
hope that helps.