My 9' S&B filter will be coming off and this 12' powerstack fiter from the same company will be going on. Interested to see if I feel any better throttle response or imroved driveability driving around town. This puppy is huge. If you order from S&B the part number for the same filter your looking at here is JK4012. Custom order #, my initials actually Hope to have this on soon. It's going on along with my JLT RAI kit. I'm going to trim the plastic intkae tube that rests on top of the valve cover, should have plenty of room.