Flywheel size?

2 different flywheel sizes based on which big block bellhousing you have. I ran into this issue in the early 1990s building a 440 4 speed 69 charger. I cannot remember the ring gear teeth count on the ring gears. I think it was a flywheel for 11" clutch, and a flywheel for a 10.5" clutch. I do know the flywheel you use needs to match the bellhousing.