Hi Imp, which version 1,6 do you have, the 105 HP differ from the 120 HP and 2,0 150 HP in not having variable inlet cam timing and will probably not take the cams from either the 2 other versions
The cams for other 2 versions have different part no. but whether the one is hotter than the other I don't know.
If you are looking for hotter cams one of the vendors doesn't list B&C cams for the 1,6, only 1,8 and 2,0 engines, so maybe the cams are not inter changeable. Here is the link
Secure UK tuning store Alfa, Ferrari, Fiat, Lamborghini, Lancia, Maserati
You could mail them and ask.
You can read about other owners (156) tuning expeirences here
Fun starts @ 3000!
Erik