Personally I’m tempted to just put a few 1.5” holes around the outside of the standard cover. Maybe the 9, 12, and 3 o’clock position (with the 6 o’clock being open from the factory).
Some people have told me this would be a bad idea because of rain but I highly doubt you could get enough in there to cause a problem (heck many modern cars even have water injection to cool down intake temps and act as a natural octane booster). Heck the factory Stage 1 intake is open along the entirety of the outside.
