How to identify "302" heads???

Also the Mr Gasket 1121G thin head gaskets are kind of a double win.

They are not only thinner when compressed down, but they fit the 318 bore better too. Made specific for the 318.

The Felpro replacements are universal 318/360 head gaskets, which are actually just 360 head gaskets that they use on the 318s.

So you end up with a larger diameter gasket when used on a 318 leaving you with a little less compression on your engine build.

It all adds up . . .