Not all are compatible though. I beleive most of the cars listed had low impedence injectors.
The injectors used on the Mustang have around 14 Ohms of resistance. So before you install any injector check to see if you have this.
I beleive the only compatible 30# or 36# injector that will work is off the Supercoupe t-bird. Depending on the year, they either came with 30's or 36's.