Originally Posted by Earth
Sorry to read this, friend.
Obviously you won't know what's wrong until you perform the surgery but I'd start at the final drive unit. There are ring and pinion-style gears in there but also a few universal joints on a driveshaft along with splined end shafts. Hopefully you blew a spline or U-joint in the driveshaft and nothing in the gearbox!
Sorry again for your driveline failure but everything happens for a reason...
Thank you Earth!
Yes, it was exactly that you had hoped for. Shaft and U joint were gone to pieces.
Have a nice day!