I went to put a Afe magnum fore air setup on my truck today and just for fun looked at the filter in the stock air box. It was really dirty. I noticed that the bottom of the air box had cracked and while not much had left a way for air to get around the filter an in the intake. I've had the oil changed, it was about time anyway. I don't know for sure when it cracked but the filter was fine at the last oil change. (According to Wally World) Are there any other steps I should take?