I'd wait and do a whole SVT UIM, LIM and throttle body change.
But to answer your previous question, you need the 19lb Orange colored injectors (cause you ahve a return fuel system)
But i ahve hear of some people having prioblems when doing just this mod by itself.....some lose power some gain.
Do a search beacasue this has be talked about many times.
Good Luck
Lupe
