Big Block head help!

I have picked up 2 sets of Mopar heads and I'm trying to determine what is what and which one's are the better one's
P4532657 or P4532786.
Thank You

Do they have the same casting number?

Here is some info from an older thread...

https://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5253954&an=0&page=1028

Those are the numbers cast in the head on the front of them.