Hercules IXB-3 VS IXK-3 Crankshaft

[jrcyr]

I have 2 motors, an IXB-3 #2474693 (1953) with a bad crank and 3 bad pistons, connecting rods and bearing inserts are fine.

and an IXK-3 #1259321 (1944) running but needs a valve job and rings.

I would like to rebuild the IXB-3 as it was the original motor installed in the OC-3, and it has bearing inserts and is a larger bore.

Assuming both cranks are standard bearing dimensions, will the IXK-3 crank fit into the IXB-3 motor?