Used Mark 20H Ally Crank cases.  The bottom and second from the top on the left side are NOS cases listed in our New Parts section.  The other six cases vary in condition from very good to a couple that need work due to welding.  The prices range from $250 for the good ones to $100 for the one with a ton of welding where a rod went thru the bottom section of the case. Remember these cases were special built for use in the Pro Alky outboard racing division and will not run gasoline.  Shipping is extra.