Hot Rods 97/97 Big Throttle Bore Diameters?

What diameters are Stromberg 97 and 97 BIG dual venturis (not the inlet choke size)? I don't care about CFM numbers, I'd just like to find out how wide those dual throttle ****erflies are.
Thanks in advance, Ed

 

1.175 dia venturi, oh never mind. I was just reading the other day about them, seems I do remember the other dimension, just need to find it.

 

"Your first task is to open out the carb intake ports to avoid a step under the carburetor. The BIG97 throttle barrels flare out to 1.4inch at the bottom of the base casting so that’s what you’re aiming for in the manifold."
This is taken from the Stromberg site...
https://www.stromberg-97.com/tech_center/pdfs/How To Modify intake.pdf

 

THANKS and THANKS! But: Phooey...unfortunately...too small. Waaah, snivel, whine, moan.