sounds like yours has an improved casting. i think it sounds worse than it is, that engine being all cast iron is really very durable, and lasts forever. the head gasket will leak small amounts of oil outside sometimes. usually on the right side, its really no big deal, the heads have been known to crack, but its not an epidemic, i'd say its rare when no overheating, and maintenance was done well.
don't worry about it, you have the best engine ever built, it will last forever.