It's not hard. Basically that black snorkel thing in the airbox is just press fit in there. You can take out the airbox and just push it out with a little grunt.
I think I saw you ask in another topic about dirt and all: my filter gets much dirtier since I both took that and my front valance off. I go through some pretty deep water and no problems (I've extended axle and tranny breater tubes also) and water getting into the engine is not an issue.
But, and especially without the valance on, I have a LOT more dirt and mud getting into the airbox. I have an Amsoil two stage reticulated foam filter and I clean it every 6 months or so. The air box is a mess now when I go in there -- but no problem and my intake tube is still clean.