When I had one fitted to my Brava in December they had to take the rear bumper off and strengthen the floor at the rear as its a bit of a weak spot on the Brava.
Dont know about the Bravo though.Presume its the same.
Fitting,the towbar itself and the dreaded vat and all extras came to £150.
Oh yeah it also took 5hrs to fit the thing.
One very boring day in Brierly hill West Midlands.