a turbo setup to run on a 5.9 probably wont work right on a 7.3 unless you change houseing and or wheels
if you do decide to run that turbo its going to take quite abit of work to mount it in there because the stock turbos mount compleetly differant
are you going to keep running stock injectors?if your not going to put some really big injectors in it I would look at getting a 38r turbo because it is a direct bolt in.