The 45 gets bothe the die block and ( shell plate carrier all together )
No, all you need to swap is the primer chute and tray, not the whole shell plate carrier. And the little ram that seats the primer.
And, once you've had the whole thing apart a few times, it's all easy.
"As was the man of dust, so also are those who are of the dust, and as is the man of heaven, so also are those who are of heaven. Just as we have borne the image of the man of dust, we shall also bear the image of the man of heaven. "