I put projectors into my NC23 headlights:
http://blog.familjenjonsson.org/blog/20 ... -retrofit/. It was tricky to find a projector that could fit into the existing housing, but it worked. They're coming up on a year now and they work fine.
My only regret is not saving the stock headlights and cutting up some china knockoffs instead. Now I'm looking for a headlight set for my NC30...
