1966 dart gas cap question?

RustyRatRod said
The WIX filter is not a vapor separator, so it does not matter which way you point anything. It is a liquid fuel filter.

so iam going the wrong way? to help with vapor lock...it does have the .006 orifice.... i was told to use it to help with vapor lock... ideas? do i need a vapor separator like the ones for the hemi and the 440 in 1968