Look at those 52yr old factory valve covers just sitting there ready to bolt on in all their glory. What did they ever do to you ? :) No bs aftermarket caps, breathers,grommets, etc to hunt down. No drilling, no measuring, no smacking, nothing. Nothing, but bolt on and go racing MaMopar badassness !!!
I know, you're still learning. You'll learn.
PS: Do you want to sell those old things ?
They can't be worth all that much after getting kicked to the curb. :)