Too broad of a question to give a simple answer. Do you just want a little power for daily driving or are you gonna be a track regular? How much power are you looking for at the wheels? What is your budget cuz a kit will run you a approximately $5k excluding install (unless you are gonna do it yourself ro do a custom kit).Kuba said:I just bought myself and black 01 is300 with 12k, and i need more power what should i do first, supercharger , turbo????help!?!??!!?