you'll also need a four wire o2 sensor. from an obd-1 car. (i think an obd-2 one would also work). and you do not need to replace the injectors. unless some one can prove me wrong. i did this swap without changing the injectors, but i have a set of obd-1 injectors laying around. if someone can explain to me any advantages with the obd1 injectors, i might consider doing that.