Your oil-pressure numbers are fine for a stock, near-stock build.
A rod knock is very unique; at idle is a deep,booming,not-very loud, and from the top is usually hard to tell where it's coming from. I have never experienced an intermittent Rod knock, not saying it can't happen. As the rpm goes up, the knock becomes more frequent, and usually louder.
Isolate which cylinder it is coming from by, one-by-one removing the plug wires. When the noise goes away, badaboom you found the cylinder. If it doesn't go away, then look elsewhere.
From the bottom, a stethoscope will tell you right away that the noise is in the bottom end, and time to drop the pan.Once the cylinder is isolated ,finding the bad bearing will be easy.
There is no other noise that an engine can make, that sounds like a rod-knock. It sounds somewhat like a muffled hammer thudding on the crank.... which of course is what it is,lol. After the bearing pounds out, the noise changes, and then you are replacing the rod and possibly the crank too.
If your noise turns out to be a rod bearing, you still have to figure out why it happened and fix it so it doesn't just happen again.
If the knock happens to be #1 or #3; one of the front two on the drivers side, then that can happen if you over-rev it without having done the oiling mods, or just plain ran it low on oil,accompanied by high revs. If one is gone, you have to check the other one as well.