2004 infiniti coupe automatic 60K miles
Rear sounds like a plane. It is louder than my radio and stock exhaust.
Same sound at every speed. I jacked the car up and shook the wheel. Absolutely no play at both sides.
I noticed there is a click sound coming from the differential when spinning the wheel.
I'm looking for a new or better-than-stock differential.
Should I sill check if the bearings are worn?
Please help.

 

Check your wheel bearing hubs. Most likely inner bearings are out.