As the proud owner of Vetter fiberglass nose #3 I'm pleased to report that my nose has now been installed on my Ninja 250 streamliner. I've only done one FE test on it so far ( 100mpg on Alan Smith's and my 100mile test loop )
but it feels quieter through the air and I can maintain top gear longer at smaller throttle openings. Craig has posted information on the build-up on this website on chapter 62 . Here is the link
2013 Vetter Streamliner-Chap 62