is your car an auto or manual?

if its an auto its going to cost you a little more for pedals, clutch master, slave, lines, and the time to install.

if its a manual your choices are endless. for something cheep go with a zc or d16z6 swap. mid range go for ls. if you want to come out of pocket shoot for gsr, type r, h22, k20.

You could spend anywhere from $800 to $8000 it all depends on what you want. i suggest using google to find out what you after. you left a lot open and not a lot of info.