what year? if it's an 01-03, it SHOULD, but, you'll need a pro5 grille too then
I also think you'll need the bumper support
There are abuncha guys that have ES's that have upgraded to the MSP and Pro5 bumpers.
I'm sure they'll chime in soon
One of my favorite thing about owning this car is the interchangeability between all teh mazdas.
from Mazda6 to miata to tribute to all the variations of Proteges