I am at my wits end.

I did take it apart. There was nothing wrong with it. Here is what I figured happened, the ARP bolt was causing the oil pump to be misaligned, this in turn put a sideways force on the intermediate shaft. It was weakened to the point that once it was turning the pump properly and pumping oil it snapped part way down in the pump drive. That is why I had oil pressure at first, as the shaft continued to spin it got worse and worse until finally I had to shut the engine down with only 10 psi of pressure. Everything seems good now.

Jack