My thought was to simply convert an ebay or dashz housing to use 1 bulb for both high and low beam. That one bulb would be in the projector housing closest to the grill. Where the other housing is just bore a 3 inch hole through the entire thing. To seal the edges of the hole you just bored simply slide a section of 3 inch tubing through the hole. Make it just long enough to mount flush so it looks decent.