are you referring to the ZC SOHC VTEC or the ZC DOHC non-vtec, well either way they will both work, but heres the catch if your car is a civic from the year 92up you have a hydraulic tranny and the 91and lower civics use a cable shifted transmission. You can but i wouldn't advise due to the extra work to put a cable tranny in a hydro car and vise versa. The ZC sohc vtec is hydro and the Zc dohc is cable, but i am going to guess the zc you are referring to is the dohc version. but tell me the car and situation you are proposing and i can give you more info.