#6 Injector / Harness

[Liquidx203]

So after some problems with my truck (everytime I try to accelerate hard my motor losses all power) I put a computer on it and it is tellin me that my #6 injector is bad. So its either the harness or the injector it self. My question is if it the actual injector how much do new performance injectors cost and what kinds are out there. because i know later on down the road i would like to replace them and put bigger injectors in so should just fix the one now or relplace all of them. Any recomendations/help/comments would be great. Thanks!