Here is a Vanke. It’s my understanding they did not come on any production vehicle.

I'm getting old but I think those came on 67 RO/WO cars. I could be wrong.

Then Eldebrock stepped up with the Rat Roaster, 2 4s and single 4 tops.

Come to think of it they had to come on the RO/WO cars or the throttles wouldn't have opened. Street hemi holes are too small the way I remember it.

But my understanding is NHRA did not allow the cheater carbs and the 67 cam with Street hemi carbs. Vanke mode was after market with a venturi, jet, meter rod change.

What does the engine development report say? Is that available in pdf to read?

Hemi carbs are the largest ever offered except the TQ. The cutouts were for better distribution

I am assuming (there's that word again) that is is the paper being discussed. I have not bought it yet but I plan to.

SAE Hemi Paper

While the mentioned book is great reading it isn’t the one I reference.

The book I reference focuses only on the street Hemi release. All kinds of development work, dyno runs, etc.

Which Hemi carbs are you talking about? The Holley cross ram race carbs or Carter Street Hemi carbs?
The 1964 426 wedge cross ram carbs were the biggest Carter carbs I've heard of on production Mopar motors in production cars

I was wrong. I checked it out. I was thinking the 67 RO/WO cars had the bigger carbs and the Vanke manifold but they didn't. I've studied 68's and 65's but never really paid any attention to the 67's. I was just thinking that was correct.

My understanding the Carter carbs all had the same size butterflies even the Hollys, 1-11/16, (big engines only)

All the stock street hemi carter carbs I've seen, 1966 up to 1971 all have the smaller primary throttle blades than the rears. I'm thinking all of those carbs. flow around 600 CFM, both the front and back carbs, maybe not
When Mopar put the new E series Carter 3705 AFB on the 1964 Max Wedge motors that shook the Hi Po world up and made those cars with those motors noticeably faster than the 1963 motors with the smaller 3447 ABF carbs
G.M ended up dropping out of the Hi performance cars wars in the spring of 1964 is what I'm remembering now. Ford had brought out the 427 ford Thunderbolt Fairlanes and those cars gave the M. W. B body cars a run for the money so Ma Mopar came out with the 426 Hemi motors for racing only in the first part of 1964 for both drag racing and NASCAR racing back then

What is the ISBN on the book you have?

This book was never intended for release outside Chrysler.
It’s an internal technical report.

I was lucky enough to find it squirreled away in paperwork found when I purchased a car from a Chrysler Engineer who had passed away.

Would you be willing to share it via making a pdf file?

You’re right cab, I checked the Hemi carbs again in fact I looked at all of them, AVS looked to be the largest

Carter came out with the D and E series AFB in either late 1962 or maybe mid 1963, the 1964 M.W. cars came with the Carter # 3705 "E" series carbs that had the same size throttle plates front and rear.
I'm not sure if they flowed as well as the later bigger AVS carbs on the 1968 and later 440 motors that had no venturi in the rear to impede air flow