Diana, not sure if this helps at all but quaife diffs were able to be used on earlier LRs running 4.7 diffs with the addition of this.http://www.quaife.co.uk/Crownwheel-s...sing-4-7-ratio
Its still vague as to what spline the drive members were for what outer shafts so when you have the spline number confirmed, it may be worth an email to them, I've always found them forthcoming in the past, very polite & willing to answer dopey questions. Unusual seeing as where they come from.
Steve.
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