I agree with Andy in all aspects. I have looked for an NSR as original as possible for two years, one that had a "loving owner" who maybe got too old to ride an NSR and would by a BMW as his next and final bike.
I have looked at bikes that had colour anodized screw sets all over, "racing shocks" or tinted screens but when you ask them when they had the power valves cleaned the last time they didn't even know the bike had power valves.

A 15 year old NSR is never worth the sum of its used price + all the spares, not even if you restore it to the orginial condition. The very moment you add those parts to the bike they loose 80% of their value.

gepe.