Wheel bearing/center driveshaft bearing

[Eyvind Spangen]

I have a noise from the rear of my '90 V8, it sounds like a bad
bearing. It is slightly louder on the right than on the left, but it
doesn't change level or pitch when I turn left or right. How can I
find out if it is the right rear wheel bearing or the center
driveshaft bearing? The car has got 130k miles, no wheel bearings
replaced yet.

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Regards,
ES