How do you remove 350z front bumper?

Remove the push clips under the hood (about 6?)

Then pull your fender liner back in the wheel wells (turn the wheels to avoid jacking the up the car)

There will be 2 bolts in both sides (10mm Metric) where the bumper meets the fender (one is harder to see so use a flashlight) loosen those and remove them.

Under the car there is several bolts (10mm) that hold the belly pan on, remove those and the bumper will be free. It should just take a little bit pulling to make it fall off.