2100 with 1.41 venturi Diameter....

I have been searching for a carburetor to use on a race car where it's required by the rules. I have heard from a very good source that there is one with a 1.41 venturi diameter(marked on the side of the carb body inside of the little circle that looks like a clock on the drivers side of the body). The largest model I've found so far has been a 1.33. I think that the 1.41 version may have been used on a car or truck other than one produced by Ford, either an International or Jeep. Any info would be a BIG help.