I hear good things about the Tein suspension, not the cheapest one that is made in China, but the first one made in Japan, it is around $700

If you are looking for cold air induction, I know the stillen is Carb legal, the Takeda might be too. Takeda is easier to install, but both require taking off the bumper.

Tires, Firestone Indy 500, Falken FK 515 then there is the General RS.

Cat back exhaust, there are many depending on your $. I have always wondered about best bang for buck also considering weight. I would love for my car to save some lbs.

More serious/crazy items

Weight reduction can be done if you want

Supercharging/Turbocharging

If you haven't heard of these guys https://www.z1motorsports.com/ What's amateru.

Finally a tune around 700 as well.

I know mine can use some suspension work but I haven't pulled the credit card yet.

 

Mods are all personal preference but my first mods were tint, and a Manzo axleback. Im working on finding wheels and tires at the moment