That video had the air cleaner cover removed. Once the air cleaner cover is back on the car, I don't think there's a need for the wire screens, as the air filter box should filter out any large particles . HOWEVER, I plan to remove my air cleaner box and expose the velocity stacks on my P300. (Look at all the Miuras - most of which came from the factory with air cleaner boxes- almost all of the covers have been removed to show those gorgeous velocity stacks.) On the P300, the velocity stacks are joined together in the middle, so there are four "double" stacks instead of eight separate ones as the P250 has. Has anyone replaced the P300 stacks with more polished stacks? What is the manufacturer and part # ?