Rob Horn in his self-built, Kawasaki 500-powered FF on track with a conventional head-first racer. PNB
This photo: © Jim Brown, Rocky Mtn Photos, as seen on Rob's blog, with more photos, here:
http://rohorn.blogspot.com/2014/05/race-1.html

There are several more photos in the Rob Horn section of the 'One-offs' folder, here: https://bikeweb.com/image/tid/158