rear end

Not sure what you're asking?

If it's a 5.0, it should be an 8.8.

If you're asking about stock gears, it varies. You can check the tag on the door for a code or a tag on the rear for the actualy ratio. It's most likely a 2.73, but could be a 3.08 or 3.27 depending on how the car was optioned.
 
one's rear-end size varies. causes of variance include diet, disposition to weight gain, whether one works out and so on.

:D