lgmv1

Ok so i have a 98 civic hatch and im in the process of swapping in a b16 its all done except a few little things i think i need new injectors but im not totally sure i took the injectors out of my old engine non vtec single overhead cam and was wondering if those would work, they fit the harness. i was told that if i used those the engine would lean out and not get enough fuel, so what do i do how big do i go?
Thanks,
Marc