Safe max RPM for bone stock 5.9 magnum

I’ve had horrible engine luck the last few years. I’m trying to change as little as possible and just keep it together until the snow flies. Sounds like I need to find a 5200 rev chip.
I am very impressed so far with this bone stock magnum. I’ll probably swap in the 3.23’s shortly but the 3.91’s are a blast :usflag:
Put a couple turbos on one. You’ll really be impressed.