New SFI magnum Flex plate coming soon.

An older chrysler starter wont fit a 904 with a factory magnum flexplate either.
Probably will run the factory magnum flexplate for now as we just want the trans back in the car.
But I would like to have a backup plan if the factory flexplate fails.
And I'm not sure the cutout shape of the larger B&M plate can be transferred to the smaller diameter one and have the balance turn out right.
Maybe I need to make a post looking for a 10241 for someone to make us a template of?