I don't know any fuel filter, which can completely eliminate rust dust from fuel tank. There are filters (I don't know right name), where dirt goes down and stays there until bottom screw it opened to drain deposits. I am sure somebody can figure out how prevent rust dust from going into carbs. I would use 2 filters: paper filter and "gravity" filter.
I hate cleaning fuel tanks!!!!!! And they still have rust dust after cleaning.
I hate cleaning fuel tanks!!!!!! And they still have rust dust after cleaning.