They look similar but I already noticed that the Molex 4366 series (e.g. 08-03-0304) was quite different as you can see in the image below. The Molex 4366 (lower contact) has the following that the above contact does not have: Anti-fishhook (tab bend down at end to prevent it from 'fish hooking" when being pulled back out of connector. Wire stop to prevent wiring from being pushed in too far. Overstress tab - flat bend beneath contact to keep it from being pushed too far in.
Also note that the bend location is not in the right place.
Due to these - I ruled out that it was not the Molex 4366 contact.
But... they might work - you won't know until you try it.
Note to eyeamred2u -- value that bag of contacts! Finding the real thing at a reasonable price has become quite difficult!
The Arcade Parts and Repair contacts are knockoffs to the Molex 4366 contacts. On the down side, they are a softer base metal. On the plus side, they are actually "available" as opposed to the unobtainium Molex 4366 contacts. Having a softer contact is always better than having no contact at all for repairs.
Compare (resized).jpg