Engine question for the penny pinchers.

I had the same problem with my 360 magnum I bought used; low oil pressure when hot but no rattle. Changed the oil pump to a high volume but it did not cure the low oil pressure. After 200 miles, it started knocking pretty bad on the highway. My buddy towed me back home, I pulled the oil pan to figure out I spun a rod bearing.

Sounds like a tired engine....