Taken from the NSXPrime forum. This guy used to own a 997 GT3 and replaced it with an 04 White/Onyx NSX. Some of you may disagree on the swap, me, being an NSX lover, must say that either car is absolutely badass...
As far as the S2000 goes, I don't have any specs, but as you can tell from the pictures, it is supercharged.
I'll post the photos with the GT3, then the NSX.
Enjoy.