If that is an engine that you had built, and it was balanced before being built last time you should be able to take it to preferably the same shop with a copy of the balance card and they can balance another crank to the old specs.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time