And the cost of a S2000 is not just the 168.000 €, this is the price of the S20000 kit. The price of a S2000 that is ready to race is much higher (
http://www.motorsportforums.com/foru...12634-p-3.html)
So the inclusive price for a S2000 is about twice than a full spec N group car.
But I think FIA is not talking about that the future WRC cars had to be a group N or a S2000 car but a car BASED ON GROUP N OR S2000. IMO that could mean that the WRC car based on group N would be allowed more advanced suspension, some engine parts replaced (pistons, camshaft). That could get the prices more close to each other. For a S2000 it could mean a turbo or if not a turbo perhaps a mechanical supercharger (roots).