I see you are from Dorr Township is that Michigan?
in regards to your cracked block, is it the original block? What research have you done to determine if it can be repaired? If you are going to build a new engine regardless I think the smartest starting point is with the original.
Restored by me. Not a professional. Restaurant worker by trade. YouTube forums and some trial and error built this beauty. Sheet metal replacement. Body work. Paint. Rear gears. Interior. And engine. ALL ME. Toot toot