Should be fine.
i'm replacing a 455 with a different 455 and one has a flex plate and the other has a fly wheel. The new motor has a Flex plate can i put the Fly Wheel on with out it throwing the motor out of balance or does it matter? i'm not sure what year the motors or even if that matters.
Should be fine.
i agree as long as the motor (and related parts) havent been custom balanced Tom
The only difference being that the flywheel has a thicker hub versus the flex plate.