I have been given some reverse parking sensors and wondering has anyone fitted these to there bravo and how easy it is?

Would it be easyier to take the bumper off and fit them.
I know i have to drill the bumper out and put the sensors through and plug them into the little box then power that box off my reverse light pos and neg.

Is this a big job ?

Difficult to say really, not the biggest of jobs out there, although there are easier ones.

it takes around 1 hour
the bumper must be removed
there are several pinches between the bumper and fender
and several screws located behind the rear tires
for drilling the holes do not use the drill bit - use a drilling crown

i have on my car genuine Fiat accessory - Meta System Active Park 4
http://www.metasystem.it/index.php/msy_ita_en/content/view/full/3213

this is the result:
http://imageshack.us/photo/my-images/827/dscn9141.jpg
http://imageshack.us/photo/my-images/153/dscn9142e.jpg