I was looking at this too. My only concern is the RI has tight emission testing and K&N listed the following:
NON-EMISSIONS LEGAL:
AirCharger Kits are NOT legal for sale or use on pollution controlled vehicles in some states. These kits replace the original air filter box and may eliminate or defeat some emission controls. These AirCharger filters carry our Off-Road/Racing Limited Warranty.
http://www.knfilters.com/aircharger/aircharger.htm
