Here’s how to fix the fuel gauge in your 350z.
I used second hand parts from a 2008 350z with the VQ35HR, the parts went in fine with no problems. I cannot find any information on whether the pumps are different.
This swap out took me around 2-3 hours including the time it took to remove the good sensors from a wrecked shell.
If you have any questions put them in the comments, thanks.