Dave - I'm not fussed about lighter wheels and s**t. Plus, i'll be putting it on a dyno when all the bits are on, I know how important it is to have the correct fueling. Thought about the jet kit, but from reading up on it, it just seems like a big headache and pain in the arse to setup.

Do you think its worth getting my current (stock) flywheel off to an engineering company and getting them to lighten and ballance it then?

I also thought about the USD forks, but my bike seems to handle quite well as it is, even with a crap front tyre! Suspension will be done soon, but I want a bit more responce from the engine first.

I have a bit of ££ to spend, I've not really set a limit, but I'm torn between buying a dedicated track bike (4-stroke), or improving the NSR further.

Idealy, I want a 4 stroke track bike and the NSR for the road. Although when I got the NSR, that was just going to be a track bike, but I ended up making a wiring loom for lights and getting it MOT'd etc.... and its great fun on the road. 4T would be more reliable on the track.