Folks: Does anyone know if the input (mainshaft) of the manual transmission
turns with the vehicle coasting in neutral with the clutch pushed in?

I'm still doing this damn noise diagnosis, and several listers
have suggested this as the cause of my problem. However, the noise carries
on while coasting in neutral with the clutch in. So, if mainshaft is still
under these circumstances, I'm down to thinking it's my driveshaft or wheel
bearings.

Frank