You may, should to be safe, need to take all the parts to a good shop to have it balanced with any flywheel you get. Have the crankshaft fix first for the bushing or buy one of the newer style pilot ball bearings that press into the flange on the back of your crankshaft hub and cut the input shaft off so it will fit and work properly for your project
I'm sure there are not a lot of good used cast crankshaft externally balanced 440 flywheels out there to choose from
Good luck