Most of the late V8s have a flat flywheel. Can be 9 1/2 Long type, 10 inch Borg & Beck type, or 11 " Long type. Older flywheels will fit but won't work with 8BA type starter plate on bell housing. The starter ring is in a different position than 59A and earlier types. There have been industrial applications too but I don't know much about them.
Kerby