Flanged bearing question

[Slogrits]

So I did the 5x13x4 flanged bearing on the rear gearbox ofmy Dads Mt410 and everything fit fine. I tonight went to do the same to my mt410 and the bearing didn’t fit. My rear gearbox has the same size as the front. It is not a front because the drive cup would be at a angle. I had some avid flanged bearings to do the front gearbox and used those. Anyone come across this?
Also my dads likes to eat diff cups and mine never has.

 

[Matthew_Armeni]

The original bulkhead for our cars had a straight output using 5x11 bearings. When we went to the .3 vehicles we went to the 5x13 bearings and a slightly angled output.

 

[Slogrits]

The original bulkhead for our cars had a straight output using 5x11 bearings. When we went to the .3 vehicles we went to the 5x13 bearings and a slightly angled output.

Thanks, I was wondering if it was a older version.