I had a ZX9R that had been bored out to 988cc (extra 22 on each pot) by the previous owner, and a Racing Roo exhaust system added, along with various other tweaks and tunes. The thing was lightning fast. I had it for 10 years, and sold it about 3 years ago. Loved riding that thing, but common sense prevailed (aka Mrs Doc Rock) and I sold it very sadly.
It was the perfect riding position for me. I tried a Yammie R1 and nearly killed my back. Same with a Harley and sitting upright. The Kwaka was perfect.
Yours looks the goods. Kwakas are highly underrated bikes, at least here in Australia. They sell well, but don't get the glam media coverage or sport coverage such as the likes of Yammie, Honda, Ducati, and Suzukis do.
Now you've got me salivating all over again with that picture!