Given that the clutch parts all need to match to work properly with one another, it might be nice to compile a list of bells that match model and compatible clutch sizes - I couldn't find one via a search for AEC 3293.
I did find an article from Moss which touches on the topic (see "Throw-Out Bearings" section) but it's incomplete:
https://www.mossmotoring.com/clutch-parts-identification/