1965 Dart 273 fueling options

So I've got a kinda brand new 600 CFM carb and this intake. Bought em both a few years back for a 66 Dart GT that has since been sold.
Any recommendations for heads?
I'm thinking what ever is most common might be the least expensive. Again, not building a racer, just a little peppier Sunday driver.
Toolmanmike gives good advice in his post.