Im'm not expecting Merc to bring a new front wing seeing as how they just debuted a new one. Also, I can't see a Monza wing being tested at Barca.
What I do expect though, is a competitive Ferrari.
i expect a dominate Ferrari
it was close to leaders on day four whit 50% parts on and Massa behind the wheel imagine what will be when Byrne diffusor and Alonso are on/in car