Boring A intake for B carb....

[Bob-A]

When you enlarge the carb intake bore on the "A" manifold for the "B" carb. 1) The new diameter is equal to the "B" carbs upper body intake hole
{correct terminology?}? 2) How far do you bore: all the way or only for a short distance? 3) For a bore diameter I come up with 1 & 5/16ths inch.
Is this correct?

In the near future I hope to put a Snyder 5.5 head on my '29 roadster and I think a "B" carb would compliment it.

Thanks in advance for any advice.

Bob-A