Cracked glass, can I replace only it?

Hi,

I had my new Moto X 2014 fall from a few centimiters, and it cracked in his lower part (it isn't afflicting more than a few pixels of screen). So here's my problem: where I live (italy) i'm having troubles finding a Motorola repairing centre, so I need to do it by miself, and here it comes the second trouble: I can't find a full replacement (at least digitalizer and glass), but only the glass, nor a guide, and I see some air bubbles under the cracks so I think it's just glued on the screen, andmy phone steels "feels" touches on both sides of the crack, but i'll be glad to have someone else giving me his opinion before spending money on an useless glass or worst ruining my phone.

Thanks to all and eventually sorry for my english.