I am assuming this is a street car.....
AFR heads are the best bang for the buck.
Dart would be my second choice.
Edelbrock heads are cheaper but are only good to .575 lift.
Pistons will determine which cc head you need.
Flat tops 64cc. Raised dome 70cc and up depending on dome height.
Intake Perf/RPM or RPM/Airgap for summer driver only.