This is Dave Lochead's remarkable Quasar replica, finished in New Zealand in 2009
Dave explains:
"Built from a Kawasaki GPz550 UniTrak, and using the donor bike's monoshock system.
Forks are fabricated leading link currently set up for a slight dive under braking
It's probably putting out 55 -58 horsepower, and by my calculations weight is under 200 kilos, it's certainly deceivingly light, and has good power/weight ratio.
I haven't been beyond 200kph on it, but it has sufficient revs up its sleeve and good enough areodynamics to run to red line in top gear, if you're brave enough, which would be approx 220kph.
Not much more to say about it really; it handles superbly, and far better than most bike riders expect, and I am most happy with it".

To see the beast in action, complete with soundtrack, go to Youtube here:

http://www.youtube.com/watch?v=MV4qVbNPX_w

I think Malcolm Newell would be chuffed to bits by this terrific effort.
Remarkable, considering that Dave's never seen an original Quasar 'in the flesh'!
PNB
(Photos courtesy of Dave Lochead)