Mine only set about a 1/2" high. If you notice mine does not set on the carb.(injector on mine)flange. The scoop tray stills sets on the carb. flange so there is no added height.

I may be wrong but in my 20+ years of racing I have never used or saw the need for a filter on a Race-Car. Any kind of filter at all would hurt the air flow,hurt the hurt air flow kill the HP.
On a street/strip car Yes I see a need for one.