True. But I think all forged were drilled for the pilot bearing and not all cast were. At least that is what I seen.
The few cast crank 318's I did installing the 833 4 speed, they were not drilled so we just tossed a 273 forged crank in. Back then it was easier and cheaper that having the crank drilled and we had the crank out anyway. At one time I think I had 6 273 forged cranks in the garage. I have just 1 now.