Okey , then with the 3 progression hole the engine won`t be smooth then?
My friend`s car is a Fiesta mk2 and he`ss use it for circuits. My question about drilling suplementary holes is because here, in Spain is difficult and expensive to get those carbs.
Anyway if the engine can run reasonably smooth at low rpms, but goes well in the high rpms, it will be not a problem because the car use is circuits mainly.

thanks for the responses