What are the best performance upgrades for the Toyota GR86?

I just bought a Toyota GR86 and I'm looking to add some upgrades to make it even better. What are the top performance upgrades that would give me the most bang for my buck?

One of the best performance upgrades for the Toyota GR86 is installing a cold air intake. This will improve air flow to the engine and increase horsepower.

Another great upgrade is installing a cat-back exhaust system. This will not only increase performance, but also give your GR86 a more aggressive exhaust note.

Upgrading the suspension with coilovers or sway bars can also greatly improve handling and overall performance.