will a bravo starter fit a brava there both 1.4 ? is it easy to fit a starter motor ?

Yes I think they'd be interchangable. Correct me if I'm wrong, please
Fitting a starter motor ain't the easiest job in the world, but I don't think its the hardest either May be worth having a look through A Haynes manual

Changing starter motors is an easy job, its just the usual amount of stuff you need to remove to get access.