Originally Posted by Blackhawk36
They aren't crap. Keep it.
I wouldn't pay to add one but if it is already there and you clean and oil it regularly, you will be fine.
Since they provide no benefit, not having to oil and maintain the K&N filter is reason enough to switch back to a paper filter.
Go back to a stock airbox. Or, since you are making the switch and if you are feeling ambitious, look into the Windstar cowl intake. Cowl induction is the only way you "might" see some benefits.