I'm still not sure if I believe that they'll do anything. Just seems like repalcing one set of wire won't help anything. I'm sure that there are weaker links that could be replaced.
There was a huge thread that was wrapped up about two months ago. There was a guy that put them on. He did not see any HP gains or at least never felt any significant. He never dynoed it either. He said though there was a significant difference in Light output of the headlights and also he said the music plaiyng in the car was a bit more crisp