Both probably@Whitestar
Can you determine if it’s coming from the top end or bottom end?
A good way to check is with a 3’ piece of heater hose, fuel line or any other type of hose that you have available.
Take the hose and put one end up to your ear and use the other end to listen to your valve covers on both sides.
Same process underneath. One end to your ear and the other to the oil pan. This is a poor mans stethoscope.
You can take a video of it once you get it narrowed down.