Replacing my knock sensors

[Doubeleive]

It's a 2005 so if I'm not mistaken I think that's a gen IV?

Sorry if it's a dumb question, It's the first time I'll ever be doing something like this I've been trying to learn on this vehicle, but is the valley cover gasket different from the intake manifold gasket? If so I did not know that and if you're recommending it I'll definitely add it to my list.

Sounds good about checking the cam sensor and oil pressure sender.

Thanks!

valley cover is under the intake, you will see it when you have intake off rectangle metal cover with like 10 bolts.
if you pressure wash the engine beforehand you may find water around the knock sensors, which is not a big deal just soak it up with some paper towels first before you remove the sensors and applying the silicone around the rubber covers when you put the new ones in is to prevent the water from getting in there.