need help cowl vent cover

well i unistalled the cowl vent cover to install my strut tower brace, the black piece under the windshield wipers. and damnedest thing the cowl broke on all sides i guess the weather got to it to make it brittle. at the moment ive got ducttape holding it together. now i need links, clues on were to get another cover be it the plastic piece or an aftermarket piece asap. thanks in advance.