I've watched some videos and on their engines the fuel pressure sensor is at the end of the fuel rail close to the coolant reservoir and AC ports. My engine looks identical but I have no sensor there.
Is it under the air intake manifold? I had it off earlier but I don't remember seeing it there but tbh I wasn't looking.
I searched AutoZone for a fuel pressure sensor for my car and nothing came up.
Does it not have one? V6.