Get your '09-16 V7 Mk I & II small block to ~65+ rwhp! Our equally weighted drop-in ~820cc pistons (no crank re-balancing needed) for a 4V head conversion. Pricing is for one set of pistons including all rings, wrist pins. WE NO LONGER OFFER THE HEADS, but we can be of help for your project if serious. This is not a simple or cheap kit to install, and is NOT a DIY project unless you have considerable experience in engine building.