Are You Able To Count All These Nissan Leopards?

Are you able to count all these Nissan Leopards present at the Customer Appreciation Day 2012 by Leopard specialist Car Shop Friend?

To make it a bit easier, here is another photo taken from the rear of that whole lineup:

Now to make it a bit harder, how many of them are zenki and how many are kouki?

The answers:

^{21 Leopard F31s, 12 zenki, 9 kouki}

You can find Car Shop Friend in Hiratsuka City, Kanagawa Prefecture. Original photos are found here.