Holley Street Avenger 670cfm to big for 318cui?

Thank you guys for your feedback!
I'll keep the 670cfm.


Now I have another question wich may is not worth an extra thread.
I have bought a "Weiand Intake Manifold 8022WND Stealth Aluminum".
Weiand 8022WND Weiand Stealth™ Intake - Chrysler Small Block V8

In the desciripion it is stated to fit for 318 - late style.
What does that mean? Will it fit my 1969? Or do I need another intake manifold?