318 Head Gasket Size?

Mopar Performance composite head gasket part number P4120093 is $31.95 for a set of two. Mr Gasket 5805G steel core laminated is $34.95 each.

Two good choices in my opinion. I'd use the MP gaskets if i was choosing between those.
"70aarcuda" has a good one also, but at .028, unless your surfaces are machined flat, i like the thicker gasket.