The original was cast iron and one just sold on ebay in the last couple of weeks with the carb. This one would work; https://www.modeltford.com/item/WM-1.aspx
Maybe?
You could call Chaiffins and talk to Dave he might be able to send you in the correct direction. I don't know enough about the Windfields to know the size of the mounting and throat and which number is which to be much help beyond that.
My Winfield is a 1 1/4" made for Model T. The intake is an original one made by Winfield, and it is aluminum. The reproductions look quite different than mine, and are thicker. I have never seen an original cast iron Winfield intake for Model T. Aluminum ones occasionally show up on Ebay.
Here is a close up showing the mixture and idle adjustment screws:
It looks like a Model V Winfield - the smallest V type carb had a serial # with 4V...
I'm considering a V Model - though the Winfiied Model S is a very nice carb with sharp performance .