Weber 40 DCOE vacuum

[josko]

I am thrilled to see how many usefull things I can read here. So hello!

I have Fiat Uno with 1.4 sohc engine with 32/34 tlde carb and I bought 40 DCOE carbs with Alquati manifold.
My ignition is drived by the Digiplex 2 and my question is how to connect vacuum to manifold to get same amount of vacuum as with standard manifold, because on std manifold all four cilinders suck the air from Digiplex 2 and on 40 DCOE only one cylinder has a vacuum port on the manifold.

Thanks!