What are the best aftermarket modifications for my Nissan GT-R?

I just got a Nissan GT-R and I am looking to upgrade some of its features. What are some recommended aftermarket modifications that would improve its performance?

One of the best upgrades you can make is to install a high-flow air intake system. This will increase airflow to the engine, resulting in improved horsepower and torque.

Another great modification is to upgrade your exhaust system. A performance exhaust will not only give your GT-R a deeper and more aggressive sound, but also improve its overall performance.

Consider upgrading your suspension to a coilover system. This will give you better handling and a more responsive ride.