actually the camaro look nothing like the 300 or charger
but the reason the 300 and charger look alike is because they're both from the same automaker, you can actually interchange the front ends of the 300 and charger, meaning the front fenders, hood and grille, i know they can because i've seen it done before, its a direct bolt on replacement just like you can put an escalade front end on a full size chevy or GMC truck/SUV