my 4.7 durango has those easily broken plastic breather peices screwed into the head near the firewall. the '02 4.7HO core I have has metal fittings that dont have any restriction inside them like the plastic ones. wondering if im ok to put the metal fittings in or do I need to upgrade anything else at the same time?

 

no thoughts on this?

 

if they fit i would try em out, worst case is you end up pulling them and putting the origional ones back if you have problems.