Just came across this thread.
http://www.gixxer.com/forums/showthread.php?t=134318&highlight=hid+retro
It shows exactly what I was expecting to do when I started planning my retrofit. Looks like the guy simply modded the existing cutoff shield within the halogen projector.
Stock unit "before modding" (pic is from retrofit thread mentioned above). I have no idea what function that OEM "tab" within the housing does. Anyone?
Stock housing after he modded it: I can't figure out what that small rectangle area is...it looks "see thru".
Back view of the cutoff line mod. I can't tell what he did/used here.
I'm not sure what he used, but essentially he blocked off the 2 little square openings and made the horizontal cutoff surface into the typically HID cutoff shape.
I did this same mod years ago when I retro fit HIDs into my Mitsubishi Eclipse. I just opened up the OEM headlight housing cleaned up the existing halogen cutoff line. I didn't however replace the OEM halogen lens. Upgrading to a better lens(as Blackxds is doing) is probably a much better option than using the stock lens.
Using the above retrofit method....I have 2 options:
Buy a simple plug-n-play HID kit(bulb and ballast)and a lens. I'd end up with a HID(only low beam) in the bottom hole and OEM halogen bulb in top hole for high beam and "flash to pass".
OR
Dual HID projector setup
In which, I'd use a plug-n-play system(and lens) for the bottom...AND mount a BiXenon projector in the top hole. If I'm not mistaken, the only thing I'd lose is the "flash to pass" feature.
I'm thinking that the Dual HID would def look better(aesthetically and there will be no "yellow tint" that halogens tend to have) and certainly put out a shit-ton of light!