I'll bet money that the gear you have is NOT a Milidon or one of the early Mopar brand that had the roll pins installed in them instead of the solid retaining pin yours has
All I can tell you is what I've shown is an MP part purchased a few years ago from Hughes; I don't know when "early" means in this case.
The Milodon I bought is still in its original package, and I haven't bothered to look any further for the 440 Source part that is "somewhere" in my parts boxes.
