1964-66 4 speed bellhousing question

Rockerdude said

There was only one casting number that I know of for 64-66 A-body with a v8. Does anyone make the smaller flywheel new?

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That's the 122 tooth. ....and not that I know of. Do you know if the crank register on the V8 is similar to the slant 6 in that the early ones have a smaller register?