Magnum vs LA oil filter plate

I know the answer. At the end of the roller cam LA's, 1991 318 and 360 Chrysler changed the threaded boss on the block-it was shortened by 0.250" and both the plate and adapter were modified accordingly. This was called the new corporate oil filter. so all of the Magnums were the new style, I assume. i had never seen anything posted about this subject on here. Hope it helps out.