Mystery - Strong Fuel Smell

I would lose that air cleaner for starters. Take a look and see if any of your rubber lines are wet or stained and check the seal at your fuel tank sending unit.

The air cleaner has something to do with the gas smell?

It's one of the few that clears the hood when using a Holley 390.

Checked all the lines and fuel tank sending unit. Just replaced the unit and gasket not long ago.

Fuel tank was between 1/4 and empty.