there is nothing right with your statements....
there is no way it dyno'd at 215 fwhp with only a header (don't say headers!) and a catback. There has to be a lot of other work done to that, like a turbo, or a lot of internal work, to reach 215 at the wheels. Sounds like this dyno was broken with 215 hp and 110 ft/lbs....the stock motor in this car would be a b18c i believe. maybe b18c1....this car, tuned right, would easily beat the stock svt.