Tri-Y Headers for torque?

There are many theories about what works with various combinations.
Pete McNicholl who was a member of the Ramchargers was successful with tuning the exhaust system.
Here is his dragster from the early sixties.
The collectors are way down the head pipes.
225dragster 2.JPG

His Willys had a form of Tri-Y that he made.
I have these that were made years ago, back yard Tri-Y.
My Tri-Y Headers.jpeg