disco/90 diffs in a series 2a

[leaf sprung]

can someone offer some advice please?

I am fed up thrashing my series to keep up with traffic. I want to know if the differential units from a 90 or a discovery would be a straight swap (i have been told that i'd need to sort out an oil level plug in the diff pan - but this shouldn't be a problem). Are the half shafts and prop shaft fittings the same?

i know about overdrive units - but these cost a fortune and there is a gamble on the condition.

cheers
steve

[leaf sprung]

thank you. this is all good stuff.

i think i have now learn't that while the range rover diffs are a good thing on the road, i will now be approaching off-road nasties at 30% more speed!

on the downside this does scupper my plan - but if it saves me wasting money on diffs that i'll end up taking out again....

maybe i now understand why overdrive units come at a premium.

cheers for the good advice.

steve