Using this radiator shroud is a breeze. Just grab the included hardware and directly fit it onto your 2015 - 2021 Subaru WRX or STI. There's no need for any complex modifications. When installing, make sure all the parts are properly aligned to ensure a secure fit. As for maintenance, keep it clean by washing it with mild soap and water. Avoid using harsh chemicals as they might damage the Neon Green powdercoat finish. If you notice any loose parts, just tighten them up with a simple tool. This way, your radiator shroud will keep looking great and performing well for a long time.