I'm sure you guys mean the Audi R8 when you say "rs8". No this car cannot beat the R8, but it's not due to the engine not being super or turbo-charged. It's because Audi just has the money to develop the car more efectively. You see when you have a turbo motor you have smaller air restictors on your intake to cut back on the power, but when you have a naturally aspirated motor you are allowed a larger air intake to make up for the lack of forced induction. So the engine thing is less of an issue than you think. Actually, there are only a few teams in the LMP900 class with turbo-charged engines: Audi and Cadillac being the most prominent. Yes, Audi has steamrolled everything for the past two years, but once again, that's because they are part of the VW group and have huge financial resources. The R8 also has a much better chassis than the Dallara since they have had three years to develop it. So the Dallara will get better, but probably never get as good as the Audi because of the whole money issue. One more thing, the issue as to whether or not this car could compete with the Nissan R390C is an astoundingly moot point. The Nissan is no longer legal for competition. It had over 1000 hp (1400 hp in qualifying!!), different areodynamic rules, different drivetrain rules (it had a 5-speed tranny)...different rules in almost every respect, so you can't really compare the two cars. So put down Gran Turismo, do some research, and get the names of your cars right.