Dont pay more than $1500AU. Make sure you get a good parts kit YOU WILL NEED IT. If you dont know yet you will need new piston and rings each kit costs about $180AU every 700km, and a crank change over every 3000km cost about $1500-2000AU. Its alot of money but it would be worth it seeing the stupid look on the face of these big cc rides as you shoot past them down the straight
Regards Karl