What does the erebuni kit (the one you always see) replace?
 

Pretty simple question: Does the erebuni kit that mazdatrix and everyone else sells replace the whole front fascia or is it just an add on to the stock bumper cover?
Here's a pic if you don't know what I'm talking about.

It lines up with the lower rub strip lip on the bumper, If memory serves me you need to remove the plastic grill in the radiator area for it to fit.

Thanks, that's all I needed to know. Appreciate it.