I agree having a crank magnaflux tested for cracks when the engine is apart is a very good idea (recommended).

Back in the years I ran a 3.915" offset ground factory 440 forged crank, it was cracked (not as bad as that one) after running 2-3 years.

Then in 2006 I built a new engine using a new Callies 4.250" stroke crank I bought from Dan. That crank was tested in Jan 2011 and was completely crack free after 5 years and over 600 passes. So it went back in for more service. The steel rods were tested also, and were good to go; while it was apart I put new rod bolts in them.