monmix is right.... just swiss cheese or chop a bigger hole in the box for now. the adapters arent too expensive. i didnt buy one tho.. so i'm not sure. rims and tires are better than an intake anyday. if you go with a street truck, then looks are more important than shaving 1/16 of a second off 1/4 mile time. and if you go off road truck, then bigger tires is more important than a lil more power. if/when you put a cone filter on, have a buddy rev your engine while you stand by the filter... it makes a sweet suction noise, and your exhaust rumbles a lil more/deeper.