Titled the Andereggen IFS.
Starting on page 3 (https://www.stovebolt.com/ubbthreads/ubbthreads.php/topics/486622/3.html).
Doing a short recap which may need correction:

The original donor 60's truck IFS track is wider than stock AD truck. The idea was tried then interest fizzled.
Later, after a combination of parts, trial & error and modification to compensate, it looks like a solution was found.
The result is a 60"s truck ride. Some like it and some prefer the MII ride.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."