KW V3 -20 -40 mm front and rear, remember top mounts are not adjustable.
There are 2 types of Tein springs for the 350Z both with different heights, so to compare, you will need to know what type you have.
Best to check if any current DTCs are showing to perhaps get a better understanding of what is going on.
Also may be a plan to carry out your resets.
If you struggle with the above then try disconnecting the battery for half an hour.
Depends on the model of your car.
The DE has 2 cam position sensors, the Rev Up has 4 as does the HR.
Just replace the faulty one with a genuine Nissan part.