AMS Racing Overhaul Re-Ring Kit for 1999-2005 GM Gen III 6.0L LQ4 LQ9 (VIN "U,N)Our Overhaul Re Ring Kit is designed with all high quality components. It includes OE grade gaskets and armor coated bearings, as well as moly piston rings. These features are essential for optimal performance and durability of your 1999 2005 GM Gen III 6. 0L Trucks and SUVs engine. With this kit, you can trust in the reliability and top notch craftsmanship that comes from our elevated standards. 8th Digit of VIN = "U or N" Kit Contents Head Gaskets