This Tillotson 3" kit includes EC Carburators 76mm 2.99 inch piston, EC billet rod, and tillostson crank case bearing. The piston is designed for a tillotson 3" bore block. The billet rod is for the 76mm Piston in this kit and fits the wildcat 58mm crank. Only reason for selling is I have decided to go a different route. My lose is your gain. Will be packaged well and shipped fast.