new valve covers

So I just bought a new set of mopar performance valve covers and air cleaner for my 72 318 motor and was wondering if anything special has to be done with regards to the line that runs from the original air cleaner to the valve cover, and if i have to run the pvc valve as well, or of there is a special grommet that goes into where the pvc valve is?

Does that make any sense? or enough sense to understand?

Thanks
Frank