Ok Jeff thank you. I am great full to have this quality of information first hand.
Can you steer me to the Concours Quality parts I would need to put an S Tube in place. I assume there is a manifold component as well.
I noticed on another California car that the S Tube was in place as well as a paper type corrugated Tube on the passenger side of the air cleaner. It was about three feet long and a one once diameter.
Rust may have been an issue with some cars, I think the day two mods and Holley carbs had a lot of owners jettison some of these items early in many cars lives.
If you have a good picture of the by 350 setup that would be great. I will order the parts you suggest.
Many thanks Jeff,
Stubee