Yeah, needs two additional M6 bolts. The bracket does come with screws but they don’t fit the factory BRZ holes.

I just bought a “license plate screw kit” off Amazon that contained some M6s. Made sense because I needed screws for the rear plate anyways. Specifically I bought this one, but there’s nothing special about it: https://www.amazon.com/gp/aw/d/B013A0Y8J0?psc=1&ref=ppx_pop_mob_b_asin_title

Photo: https://imgur.com/a/DgUfzZc