Sorry about my previous post. It was 4 or 5AM at the time, I was very tired, and I mis-read the pictures. I am very familiar with the way the stock floormats look because I remove them often to shampoo my carpets.
The floormats are close to the G35C's, but the outer sides shouldn't be curved outwards like that. Also, the shaping at the top isn't perfect.

Btw, anyone know where I can pickup a pair of OEM floormats? My driver-side floormat/carpet is disgustingly dirty from the winter and my carpet cleaning products won't get rid of the mud and crap.