Deciding on replacement intake (318, details in post)

I agree with Junkyardhero that heads with 220-230 cfm will get you there but if you want to run less cam I'd be shooting for 240-260 cfm.
that begs the $56,000 question: if it does make the same juice, then where and how?

more compression? more carb? more duration with super aggro ramps? what happens to the curve? how's the driveability?