Mark, I know of a guy in Baytown Texas that has this new Eagle crank for sale. Not sure if this is what you might be looking for but here are the details.
This is a new Eagle crank for a 350 Chevy. It is a 3.750 stroke.
Part # is 435037505700. Chevrolet 350 Forged 4340 Steel Crankshaft
3.750''...