[boxhead]

I was searching through some old threads tonight and realised I hadnt told everyone what the final outcome here was.
Well what I found was that the old bearing had failed, Once I removed it I pulled it apart and found that 1 of the tappered rollers had turned through 90 degrees and was sideways in the cage.
My guess is that when the car my diff came out of was crashed then maybe the left rear wheel hit a solid object (street gutter) it hit sideways and damaged the bearing.
I did check all the contol arms and bushes for signs of damage (paint flakeing or bent bolts) and all appeared ok, but I will have to wait until I get it on its own feet and down to the aligners to see if all comes up ok.