Hello, I have a 2013 infiniti G37s Coupe, when the car accelerates from low speed after a speed bump for example or from a stop, it produces this rattling noise , it only happens during light acceleration at around 1200rpm or so, also the car is louder than other coupe Gs l've seen.

Some info :
1. I bought the car used about 2 months ago and it's always been like this, I did not change anything mechanically other than the sending unit in the fuel tank + new tires.
2. the noise can't be reproduced while idling, only when the car is lightly accelerating from a stop or low speed.
3.I went to my mechanic and he said that the noise is coming from under the car towards the rear, he said that some rear bushings needed to be changed and that the drives driveshaft center support bearing has gone bad, still not sure if that is actually the issue.

I've attached an audio file with the sound, it happens right before i use my blinker, couldn't figure out how to attach a video with my post iam new here, any help would be greatly appreciated 🙏🏼.