Custom Wiseco Pistons for 13/14 GT500 5.8L Designed and proven to handle upwards of 2000hp 3.681 Bore (Std Bore) will work with sleeved 5.4/5.8 Blocks or Factory Bore 13/14 Model GT500 1.220 CH -11 cc Negative Volume .866 Wrist pin .200 Thick Wall Skirt Coated .300 Top Ring Land 9350XX Ring Set will not work with Iron 5.4L Blocks   Set of 8 Pistons with Pins and Rings