It's actually an '83 Van Diemen FF converted to m/c power with an 1100cc Kawasaki, vintage F-5000 style wings and FM tires and wheels. Looks extremely well done and is offered at $9500.
Disclaimer: Found while surfing...the usual disclaimers apply. That said, maybe one of our NW brethren could pop over and take a look for a first hand report.
'83 Van Diemen F-1000
Happy New Year, everyone!