When launched the zzr600 was fastest 600 on the planet (genuine 150mph), i went and bought one just because of this

...the later ones like yours are even quicker as have ram air induction getting closer to a real 160..
At the time my cousin had a GSX750 slingshot, kinda a tourer with a gixxer 750 lump, after going on my zzr he had a big cheesey grin on face and couldn't believe how much faster it was than his bike. If I remember rightly at the time it was competing with the track focused FZR600 and the reborn CBR6 (without jelly mould shape F2 ?), and it's top end blew these away.
The first ones had a real slack cush drive with lots of play so it kinda clunked when pulling away.. think they sorted it on later ones though..
Even by modern standards still pulls like a train (though more soggy than modern stuff in the corners, they wallow abit), you'll love the 14.5 red line
Fantastic bike...just take it steady to begin with because even though not a razor sharp tool like the latest 600s it's still VERY quick in a straight line and it's easy to get yourself in a whole heap of trouble. I remember riding back from showroom and I'd just stepped off my KR1 250, I overtook a car like I would on the KR1 (throttle pinned) and almost hit a tractor head on.. shook me up abit.
Get some photos up when you can, here's my old one
and a few months later when some ahole pulled out of t junction after being waved across my path by someone in filter lane

(almost 20 years later my wrist still hurts, lucky he missed my kneecap)