Ram air is BS. You cannot create boost just by sticking your intake in the airstream. The air just takes the path of least resistance, which is around the intake.
If it was that simple, all cars would have huge trompet intakes.
Air speed as well doesn't increase you intake capacity. This has to do with air mass fluctuation and turbulance. Cars are fitted with variable intakes to actually slow down the air, to get more air into the cilinder.
There's a reason why you never see any proper race cars with those hot rod hood scoops. Race teams are actually more likely to close up standard "speed holes" for aerodynamic effeciency.
And most race cars use the factory air box, b/c the engineers didn't put it there at random.
And you want to avoid putting your intake near the hot radiator, which is exactly what they have done here.