Front bearing retainer major diameter, Toploader vs. T-10

[Lenz]

I've been looking and am getting conflicting results.  It's a given that the '64 only narrow case HEH-D used a 4-11/16" front bearing retainer, '65 and newer went to 4-7/8".  What I am trying to determine is whether '63 and older T-10's used a 4-7/8" major diameter retainer as well as the '65 and ups, making the '64 bell the only year set up for the smaller diameter.  Looking to figure this out for trans and bell compatibility.  Input appreciated-  Len 

[TomP]

Not sure but I believe the diameter changed after 64 regardless of 3 speed, 4 speed , Toploader or T10

[Lenz]

Thx-  If I'd done the proper checks at assembly I wouldn't have to ask the question.  Hard shifting, pretty sure I have an alignment issue.  Not for now though, it's off to Beaver Springs.

[Ranch]

My '62' T-10 had the smaller bearing retainer, but I was able to get from Ford the larger one (which was a bolt on) so I could go to a Lakewood shield that was only available for the newer flywheel and starter, now that was back in 75.