I want to vin my old race bike but its a bit of an odd one it would be good if someone on here does vins?

I have a 05 zx6rr thats never been registered and needs a vin, i had it in at vtnz but they couldnt even tell me what paperwork i needed to vin and register the bike! i have a letter from kawasaki saying they imported the bike and sold it as a new race bike etc