what year is the car if it is an 04-05 then u have stage 1 injectors already if u have an 03 the injectors will be purple colorish and yes those are the stage 0 injectors if u look at the pcm it will use premium fuel only and it will also say mopar stage 1, 2, or 3 on it that is the way to check if u have a stage upgrade
what year is it? if its an 03 it will have i believe purple on the injectors. if its an 04-05 then they will be blue. no way to tell from that. i would say just take the number off the pmc and call dodge and they will tell you if it is a stock part or a stage kit.