This listing is for a new set (8) of Speed Pro (FMP) Hypereutectic Chevy 350 pistons - H345DCP. Flat top with 4 valve reliefs. In your choice of over sizes. Select over size needed for purchase. Anti-friction coated skirts. For use with stock length 5.7" connecting rods (press fit only) (These can be used as a full floating piston you will need to buy the locks rings separately. Pistons ONLY, Includes pins.