Replacing Air Cleaner for Aftermarket High performance Air Cleaner

What is your question?

I figured it would be a few screws to replace the stock air cleaner, and valve covers. Well the valve covers are easy. but the air cleaners are different.. the stock one in the dodge. has hoses coming from it. One i think goes to the exhaust manifold and the other goes out the side of the truck. maybe a air box.. I'm very new so forgive me. just need some help on what to do. when putting the new one on. the new performance ones I search online look like its just the filter with the top and bottom pieces to screw down on top of the carb. So am i just suppose to remove the hoses and remove stock filter, and screw down the new one? what about the hole that i think would be left after i take the hose from the exhaust manifold? Please help me