I've found a compamy (tts-performance) that sells 1000 cc big bore kits for the zx9, has anybody got it or tried it? is it worth doing?cost wise it seems very reasonable (only!) £350 for the piston kits
comments?

it is a good price but then add up all the machine work that needs doing

you may aswell upgrade zx10 or the like

As Chris said, probably won't end up being "locost"
I'm making all the mods external to the engine (MS & Nitrous), so when I do eventually lunch it, I can transfer all the goodies to another engine.... that's the plan