Hi
I crashed my Bis and replaced the whole ront panel with one from beevers, it's great! The differences are is that there is no holes for the badges, no holes for the resistor with three cables going to it and no holes for the bonnet stay. All you have to do is drill the hole for the resistor, you don't need a bonnet stay!
I will post pics if you need!
As for wings I got mine from Ricambio, the Bis wings are different from the aircooled and harder to get hold of. Ricambio ordered mine from Fiat main dealer in Italy!
All looks nice!