I wouldn't bother with them honestly. Just simply purchase a factory replacement for probably half the cost, replace it every 20-30K rather than messing with cleaning a K&N. They never come back out quite as clean as new. Waste of money.
I saw a youtube video of a dyno test between a paper factory air filter vs a K&N drop in air filter several years ago. I think it was on an 2011 v6 Mustang. The K&N air filter made 3 or 4 horsepower less than with the factory paper air filter