ok, here we go ...
mk2 1984 "G" Type axle (Twin Rear Wheel) From a 190 2.4 Minibus
Backplate to Backplate (inside edges, outer rim to outer rim) = 1222mm
Shock mount to Shock mount (inside edges) = 596mm
Shock mount metal thickness = 4mm
Shock mount internal width = 39mm
Shock mount (outer edge) to centre of Spring "U" bolt hole (inner ones) = 115mm
Distance between Spring "U" Bolt holes (centre to centre, left to right) = 78mm
Distance between Spring "U" bolt holes (centre to centre, front to back) = 115mm
Distance between Outer Spring "U" bolt holes (centre) to Backplate mounting flange (outer edge) = 98mm
Distance from Outer Spring "U" bolt holes (centre) to Backplate (outer rim, inside edge, ie where it bulges back inwards) = 79mm
Spring Saddle Centre to Spring Saddle Centre = 995mm Approximately (hard to measure accurately over the Diff housing)
These are all measured from my axle while it was off the vehicle, so you might find a little tiny difference as it was done with a tape measure and my tired eyes
.... but for our purposes here they should be fine
i forgot to get the dimensions of the spring saddle, but because of the sloping sides on these that would have been difficult, and inaccurate this is why i went to the centre of the holes, and for our needs here the saddle sizes are not so important as we know they are all suitable and are all similar
Probshaft flange details to follow, lost the mk2 prop flange in the bottom of the oil container i used when i drained the axle, i'll dig it out and measure it when i get chance.