Drill mark on crank journal? Roller 360

The funny thing was the seller had a complete 360 magnum he was going to use for some build instead of this engine. He showed me an intake he was hoping to use on it and it was an LA sp2p. I told him it would not even bolt on, and that the sp2p was probably not the best choice for that magnum anyway. I am kicking myself for not buying the b&m 360 notched flexplate he had though, at the time I thought this engine was a magnum as well, so did not think I could use it.