@dartfreak75 here's the uncle tony video about using the using the 3 nipple filter with the vapor line:
Check and see if you already have a vent above the sending unit? I'm going out in a little while and will check mine but my tank appears to be unexact repo. There is a vent nipple visible in this aftermarket tank: 1971-76 Dodge Dart / Plymouth Duster Gas tank
