I was thinking about upgrading my speakers on bravo, but I don't know what the wattage on original speakers is and I need to know it because I don't want to buy the same wattage. Does anyone have stock speaker specs?

Do you have better stereo and amplifier? Otherwise just buy any better speakers with higher sensitivity.
Also you need to buy spacers, since Fiat does not use standartied size speakers. And they are riveted into doors.