Carburetor intakes there is a difference, we have no luck with what usually comes with dual carbs.
This is a pic of what you want
Notice how smooth the casting is. I have to run but I will post the two types side by side. The smooth cast ones put the carb away from the fan shroud a 1/4-1/2 more. So if you see any at a swap meet get them you will not be disappointed.