INjen intake Hotshot headers IF YOU CAN FIND THEM if not DC sports or OBS, exhaust w/e the fuck you want anything will work. personaly im still witht he n/a ka love but right now im focused more on my coupe.
Since im good friends with a machine shop i can get alot done for cheap. but now im leaning towards leaving it mostly stock as i have it now. I really really really want a IS300 white manual.
basically my street set-up is k and n drop in filter with stock air box but i cut out one whole side of the inlet part of the box, and my injen intake pipe attached to it, electric fans and removed all of the emissions, i still have stock exhaust, i hate cars with loud exhausts and are slow as balls, and i ran a 15.3 with this set-up considering stock S13s i think ran a 16.1? but im happy with it for now, i just hated the stupid belt driven fan noise.