99 se sport 4 dr

hey i was wondering if there are any kind of performance mods i can put on my car. most of the parts ive found are for the ZX2 model and the engines are different so i dont think they'll fit right. thanks in advance.

they make headers and intakes for the SPI, you can chip it, use a pully made for the pully from a focus SPI, get a catback.