I started a thread asking about this conversion too. if you find out any info let me know. I'm also looking into taking the light housing apart and painting the chrome area since that would be alot cheaper.
http://www.fordfusionclub.com/index.php?topic=55990.0
http://www.fordfusionclub.com/index.php?topic=57170.0
http://www.fordfusionclub.com/index.php?topic=55990.0
http://www.fordfusionclub.com/index.php?topic=57170.0