I am not aware of any 370Z dynos with an R2C intake. When I bought them earlier this year, all I could find in my research was G37, which at least is the same motor. My car is completely stock except for these intakes. I'm sorry I don't have a stock comparison dyno - I did not have the time to do a swap. So I understand that these are only so useful given the variation among dynos. I have asked the guys if they have past data of a bone stock 370Z, so if I get anything, I will update this post.
Thanks to NKP Racing for their assistance
Here's an iPhone video of the first run and picture of the results page.
A rep to .c2 for posting the video on YouTube