here what i think:
1. a 640whp s2000 would have to be boosted out of its ass to make that power and would be extremely laggy and have little low end power.
2. the chassis wouldnt react well, that car was never designed to utilize that kind of power around a track, the Viper was. it would be a death trap at best.

I'm not saying you couldn't make an S2000 competitive with that Viper, you definitely could, especially on a more technical track, on something like N-ring, it would get its ass whooped worse than rihanna.

you would be better off using a more adept chassis, maybe something with a little more wheelbase, like an NSX.

the point is, this Viper is something that Dodge offers from the factory, this a no bullshit all out racecar, honda has NEVER offered such a thing and probably never will.