Front Drum - 727 Pump/Stator Support Question

Yes, but the early one ball stator is what you are after, the two ball is for the later non lockup and requires the matching input drum with third sealing ring while the three ball is for lockup only.

Do you know what years came with the 1-ball stator? I was told to look for a 71-up unit since it has the wider bushing and the new billet steel drum I'm buying is made for the wider bushing.