Bearing Retainer Interchangeability

Hi all,

I had a B/E A230 trans with a 4.34 retainer and it fit in my bell perfectly. However, I am swapping in a B/E A833 and the retainer on that is roughly 4.7 (I couldn't measure either of these perfectly because the input shaft got in the way, but the A833 is definitely a little bigger than the A230 and will not fit in the bell).

The bell side to side is 4.349, and 4.354 vertically (probably both 4.354 since it's a circle, I was in a rush. So the A833 will not fit right now.

The A833 build date is Aug 20, 1969.

Can I just swap the A230 retainer onto the A833, or do I have to get a new bell/have the bell I have machined down?

On a completely different note, if I can't swap or end up not swapping for whatever reason, is this the bearing I'd want to buy?
Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists

Thanks,
Karl