596 casting or 308 casting for mild 360 4bbl

For a Lo-Po motor like this, it is not even worth the worry. I read his intentions as cam it, 4bbl. intake and carb it, drive it. (Headers or no.) Give it a little head work and call it a day. It is just the most basic upgrade to do.

Poppinsmoke, to split the advantages and disadvantages while comparing the 2 heads is fine and great for a bench race session like this, you will never know the difference between the 2 heads. Stock, large valves or not and/or ported. If there both done the same way and I installed, then swapped them out on a blind drive by you, you'llnever ever know. It is truly splitting hairs.

I like your build though I would use headers.