You threw in an unknown, used oil pump? lol.
I added an edit to my previous post, I didn't read your entire post so I missed a lot of what you've done. Have you had the crank out for any length of time? Has everything been measured and proven truly round? I presume you've got a thermostat on the oil cooler (I REALLY hope you ditched the stock pressure based piece of shit)... Is it a full flow or bypass setup?