All I'm saying is what I have read in Many different places, apparently to fit a 7 and a Half inch diff in a escos all you need to do is shave a bit off the diff, so I can't see the mounting points being different

The hole it fist in might be for some reason. I suppose it may be worth taking both diffs out to compare but in all the time I have read about the differences I was told the beams were completely interchangeable and technically the same.

Would be great for others to confirm, even with pics to show the differences