GM frowns on the aftermarket intakes. There is a TSB about voiding the warranty on any engine damaged by water ingestion with an aftermarket airbox installed.
Also, there is another TSB that relates to drivability problems with aftermarket air filters and oil from them causing problems with the mass airflow sensor.
I don't recommend changing to an aftermarket filter or airbox. But, if you just have to have one, keep in mind the pitfalls and fights you may have with GM. Only you can decide if it is worth it to you.
Klaus
Rare 2003 H2 with UM8 Integrated Navigation Radio
Skull & Bones Member since 2003