so I will jump in the puddle ....
We need MASS more information ... alot more and a very different noise would occur if the drive shaft had issues.
watcha driving ? #1
when did you check the tranny fluid level or smell it or check its color ?
is there an oil slick behind the car b4 it stopped ?
any smoke or hot smell ?
2 speed 3 speed over drive 64 tempest or a 06 GTO ???