The flanges on the pictures on these diffs , the vlsd has the evenly spaced 6 holes to bolt the axle to the flange , where as the original v35 diff has 6 holes but 3 paired ...
So I was looking at the possibility of swapping the "stub axles" the part that slides into the diff to allow the shafts the mate with the diff ..
Now seeing the pictures that youbhave posted looks like the stub axle is longer obviously . So changing the full axle may be the trick