At the track you would notice losing power from a hot air intake. Besides, the 150 hp, 3200lb PT is already slower than mud running up hill so a little slower isn't going to be as noticeable to the butt dyno. The stock intake system is designed very well, but if you want something that looks full, race, looks pretty and gives you a new sound then go for it.
For myself I'll stick with a K&N drop in filter and save a bunch of money and actually get better performance than a hot air intake. Also, if you have to have an intake then get an Airade. They at least try to keep out hot engine air.