I too was looking at the belly pan stickers for my Ninja here in India. I just went to the website and downloaded the 'vector' file of Kawasaki's logo. Gave that file to a vinyl sticker vendor here and viola we had a set of 2 stickers ready in 15 minutes.
Cost $2 only for prep and stick.
You can find the vector logo at Brands of the World
- search for kawasaki there.
They are approx 11 inches in width and fit like a glove.
Hope this helps.