Using this Perrin Shifter Stop Upgrade is a breeze. First, make sure your car is a 2015 - 2024 Subaru WRX and you have the OEM shifter. Then, with the included M4 short arm hex key and M6x25 socket cap screws, you can bolt the upgrade directly onto your existing Perrin shifter stop. It should take about 45 minutes. Just follow the installation instructions that come with the kit. Remember, this upgrade won't work with aftermarket shift plates. For maintenance, since it's made of 6061 - T6 aluminum with a red anodize finish, it's quite durable. But you can give it a gentle clean every now and then to keep it looking good. And don't worry, it comes with a 5 - year manufacturer warranty, so if you run into any problems, you're covered.