Gearbox problems

[peterban]

The LTD's started making noises from under the centre of the car.
It sounds like the brakes rubbing but is definitely coming from the transmission tunnel area.
When stationary with the brakes on if you go from reverse to neutral it makes a small whirring noise without any motion.
A couple of times it has banged into reverse.
When driving you can also hear the noise with the window down up until speed or wind noise drowns it out.
I took it to Bayside auto in Frankston and they tell me they have never heard the noise coming from the transmission and blame the diff????
I can't see how it would be diff noise when the car is not moving.

Anyone had this sort of noise?