Pretty easy swap. The air box is a two piece with a plastic push dart holding the two pieces together. Its kinda like the platic darts you find on newer car door panels.
Once the airbox is out you will need the release tools for the fittings in the pics. the upper fitting is 3/16" and the lower is 5/16". Just slide the release tool over the line then down inside the fitting to release the compresson tabs. You usually push the line and filter together as you insert the release tool then pull them apart with the tool still in.
I will post up tomorrow what I think is a Napa fix for the spendy Polaris filter. I been trying to solve this for weeks.
This is your air box. The pick tool shows where the connector dart is
Use a gasket scraper or sharp tool to shear it off or pry it out. I shear it off and gat a pack at Napa
Release these 2 locking tabs
Thats it, box should roll right out. There is an anchor strap on top, you'll see it easily. You can leave the boots clamped to the throttle bodies
Here's your filter with the box out
Filter release tool look like this (actaully there's a couple styles, Napa will show you) this is the cheapo
Slide it over the line and into the fitting. You see the capped Schrader valve above the filter to the right, this is to bleed line pressure. Put a shop rag under when ya do it.
Good luck. ps....don't forget to clean all the belt dust out of your air box while you have it off. EW