This listing is for a set of (8) Silvo lite Standard Pistons & matching moly Rings Kit compatible replacements for 2002-2008 GM Chevrolet Pontiac Cadillac 6.0L LQ9 & LS2 engines used in Corvettes Escalades, GTO, SSR, CTS. VIN Codes "N' & "U". VIN refers to the 8th character in the vehicles ID in lower dash reading from left to right. These are Hypereutectic COATED SKIRT Flat Top Pistons with Floating Pins. Compression Heaight: 1.328". For floating rods. Pin Diameter .9429 (Important Note: Please be sure your Pin diameter is .9429). Some VIN Code "U" engines have a larger .9451" pin diameter that is different and these will not work with your rods. Please select size needed from drop down box before adding to Cart!