What aftermarket modifications can I make to my Nissan GT-R for improved performance?

I just bought a Nissan GT-R and I'm looking to make some modifications to improve its performance. Are there any specific aftermarket options that you would recommend?

One of the best things you can do for your Nissan GT-R is to install a performance air intake. This will increase airflow to the engine and even add a nice sound to your driving experience.

Another popular modification for the Nissan GT-R is to upgrade the exhaust system. A high-performance exhaust can improve horsepower and give your car a more aggressive sound.