You seem to be the one getting upset. We already answered your question and it IS clear
1....An LA 360 and a Magnum 5.9 are both externally balanced BUT DIFFERENT from each other and therefore require different external weights
2...An LA converter for a 360 has weights on the converter. You need to take them off or use a known neutral converter with the magnum, and then use a weighted flex that is weighted for the Magnum 5.9
3....If you can not find a BM or other, then use the factory magnum flexplate. The only problem "should" be if you have an extra large converter (like a truck) and the flex won't fit. The flex MUST be for a 5.9 Magnum, and not a 5.2
YOU WILL NEED to elongate one hole in the 5.9 flex to fit the LA converter, and that was already shown. The original LA flex/ converter was "keyed" by using an "off" converter hole so that it only fits one way. This was obviously to locate the weights (on the converter) in the proper rotational orientation. The Magnum flex has symmetrical holes and will bolt to a magnum converter in any position. Therefore if you are going to mate an LA converter to a Magnum flex, you must elongate one hole for the "odd" converter bolt.
