The charcoal canister is supposed to absorb the fuel vapors and is plumbed into the bowl vent
at the carb.The vapors are supposed to purge/pull into the carb when the engine is running. Problem is the Holley
doesn't have a hook up for the hose as you stated.You may try the air filter housing or base. That's if you use one.
I had a canister go bad on my 88 Ram and it filled the fuel bowls with charcoal and plugged up everything.
The GM ones are still available aftermarket and don't cost much. That's what I bought because the Ram has to pass smog round here.
This may work as while the car is moving to purge the canister. Just guessing.