Something's wrong. My Scoggin-Dickey catalog shows the MKF630C kit as using Sealed Power forged pistons for $529.99, but the website shows a price of $319.95. My catalog shows hypereutectic piston kits for $319.95 @ a c.r. of 8.3:1 and a 8.0:1 kit with cast pistons for $289.95.