ZX12 - wanting to buy

I currently have the option to buy one of two ZX12s.
Both are pretty much identical - both 2003 models, around 18,000kms and in good nick.
One thing I noticed was that they both have a noticable gearbox/drive-train 'whine'.
Is this a trait of this particular model? Anything else I should look out for?
Both advertised for roughly $11K at dealerships.
Both are pretty much identical - both 2003 models, around 18,000kms and in good nick.
One thing I noticed was that they both have a noticable gearbox/drive-train 'whine'.
Is this a trait of this particular model? Anything else I should look out for?
Both advertised for roughly $11K at dealerships.