ive had the clicking, thats from the axles. nissan can regrease them but it will eventually come back. i think my dealer does it without asking as it will go away and come back 1/2 year later then goes away again.
that is a higher pitched tick sounds as the car accelerates or decelerates ( when the body shifts its weight ). OP does that sound right?
skip to 1:10
https://www.youtube.com/watch?v=WcxT7Vdbfuo
these shows the problem a little closer / how to repair
https://www.youtube.com/watch?v=3ipx1OWx3kk
https://www.youtube.com/watch?v=r9NsxI8XbLs
if this is the sound its been an issue for a while ( notice g35 and 350z had it )
i just reread what you posted, you said not the click sound. OP can you get a video of the sound or find an example on youtube? The 370z engine and transmission on these cars are very noisy, but there is plenty of knowledge to help you here
welcome to the forum