Hypothetical 360 magnum build
Yup I know about the differences between 360 LA and magnum flex plates. I've dealt with all of them at some point, in engine and/or trans swaps.
You forgot one. The magnum one without weights where the balance was welded into the converter face....(93-95 as I remember)
but the method of attaining the balance, isn't as important at this point as (in this case) as attaining the correct amount of balance//// whether that balance is attached to the flex plate or the converter....for the chosen parts used, in building an engine