FWIW, I deleted the stock charcoal cannister when it fell apart inside. They only have about a 10 yr lifespan, but any Ford cannister '67-up duplicates it. I ran the hose from the tank vent directly to the air cleaner, using a small NAPA foam filter inside the cleaner body. The filter also acts as an anti-backfire device for those cold morning starts. No fumes at all, but of course I'm running a Holley carb.
I also replaced the stock fuel tank vent with one Gary Hall used to sell that is also a bolt-on anti-rollover valve, and it's hose bib is smaller than the stocker's so I needed to change hose size anyway. The anti-rollover valve was another DOT safety mandate for '82(?) and up U.S. passenger cars & pickup trucks.
Gary used a stock '80s Ford vent/valve with a ring-adapter to allow bolting it onto a stock Pantera fuel tank. Once you drill out the stock valve's pop-rivets, you find the tank boss holes are metric threaded. DeTomaso listed an anti-rollover vent/valve for wide-body Panteras, but it was large, in four pieces and 40 years ago the parts sold for $300! Hall's compact legal plastic valve sold for $29.