Here's some I've already got. They're from a 2000 with 3.54 ratio, but I do have a spare 3500 diff unit which I could split open to see the 4 pin diff (I also want to see what it looks like :wink: ).
There is the diff just after I unbolted the front extension tube:
Output shaft assemblies unbolted and tapped off:
Side of diff case unbolted and tapped off:
Input pinion shaft and crownwheel cage removed from casing:
Close up of input pinion shaft:
Close-up of output shaft assembly:
Close-up of crownwheel cage assembly:
Here's the difference in size between the rover crownwheel and jaguar crownwheel:
Those are all I have on this computer, but I'll try to get some photos of the extension shaft and coupling during the week. If you want any specific dimensions let me know, although I don't have the casing to hand as it got junked recently.
I believe the main weak points are the long extension shaft and coupling to the pinion shaft, and the output shaft/hub assemblies, although that is internet gained knowledge, and looking at the parts, I have no reason to doubt this.