Which Intake manifold gasket

I want to install a cast iron manifold with big ports on to a 1984 318 with small ports. Should I use the small port gaskets or big port gaskets? And what’s the best gasket to use? The 318 is all stock. Thanks FABO.90EEDE2E-EED5-4B23-A711-E1D33EFFB07D.jpeg