5.0 injectors in a 2.9

I have a 86 ranger wit a 2.9 im currently rebuilding. im looking for more umph and i was told i could run 5.0 injectors? im planning on a bigger cam and headers and full port and polish. but what all would i have to do to put 5.0 injectors in what can i use off my fuel system? thanks any other tips and tricks would b appreciated