There are no true 3-link setups available for the rear of a JK without requiring you to remove your factory gas tank and relocate it to the back. Unless you trailer your Jeep, I would not recommend it. There are 3 link setups up front available but, they are essentially a 4-link kit minus one upper control arm. While there are some advantages to it, I prefer the added strength and redundancy of just a normal 4-link setup. If you're going for the kind of big flex EVO coil overs will give you, I would recommend getting the EVO long arm kit as it comes with arms and joints made for big flex. That, or modify what you have or another kit to use johnny joints on both ends of the arms.