^ I dont know why you would think that they would have aftermarket parts for this car at your local auto parts store at this moment.
It's a new car, so dont expect aftermarket cam shafts for it to hit store selves for a few months.
If you want mods, custom make them your own, or talk to Honda. They probably have something at the dealer for customization.
There should be some parts that was carried over into the new civic, but not sure. No one knows exactly what this new civic is capable of besides Honda because its new to the market.
I rarely see modified new civics in public because not every ricer can afford a ~$12k and have extra for mods.