Need advice..

Okay I've been getting a whine from my rear end. Possibly thinking that its a crush sleeve. Now, should I go and have it checked, and if it is the crush sleeve, have it replaced... or....
Think about going for the Moser 12 bolt or something from strange? I'm not thinking about doing any more mods to the engine. Do you think that the stock 3.42's will last a while?
Thanks in advance.

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RobertoZ28 '98 Z28 6spd
-SLP clutch assem., & billet Steel flywheel.
-SLP Shifter, knob, & Lou's short stick.
-SLP Loudmouth 3.5" slash tips
-SLP skip shift elemitator.
-SLP Airbox with K&N.
-Free air mod.
(13.698 @ 106.383mph)
My Car (http://camaroz28.cardomain.com/id/robertoz28)

Have you checked the fluid in your rear? If it has a pinion seal leak it could be low and causing the bearings to wine. Usually a wine in the rear is caused by gears getting ready to come apart or the carrier or pinion bearing going bad.

yeah the fluid is fine it is completely full, and it doesn't leak. I thought that it was, but it's not, I've had my eye on it for several days, and not a drop.

Anyways, it got so loud today, that I took it to the dealer to see what they say. I'll let you know tomorrow. Oh and they said that they can install any SLP product too.