I am looking for a output shaft on my VANE-style pump for my 1966 Ford4500.

The pump itself is ok , just that the axle snapped when the joints/shaft between engine and pump broke.
So if anyone has a broken pump that still has a good axle ..

Is the axle hardened steel all through or just surface hardened? Was considering welding it , after I drilled and tapped the pieces, just alot harder if its all hardened steel.