Using this kit is a breeze. First, find a flat and clean surface to work on. Take out each part from the package and match them to the corresponding areas on your Subaru WRX or STI. The bolt - on installation means you just need some basic tools to secure the splitters in place. Make sure you tighten all the bolts properly. As for the delivery, remember that you'll need to sign for it. When it comes to maintenance, since it has a powder - coated finish, you can simply wash it with mild soap and water regularly. Avoid using harsh chemicals as they may damage the coating. If you notice any scratches or dents, it's best to get them fixed as soon as possible to keep your car looking great.