'65 Barracuda /6 strong fuel smell

You'll also want to closely inspect the fuel tank vent.
It's a line that connects to a nipple on your fuel tank filler tube, and loops up towards or into your C pillar, then back down alongside the filler tube, and finally through the floor seal and terminates inside the frame rail.
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You want to make sure there are no breaks, kinks or rotted/disconnected rubber connecting hoses on the vent line, since any leak there will cause the tank to vent directly into the passenger compartment on a Barracuda (or a station wagon as well).
Repair as necessary.