OK, I'm massively late to this party, but...
Range Rover Classic center bore is not an askable question.
They are 'Nut Centric' not 'Hub Centric' as (I think) all modern cars/4x4's are today. You will struggle to find a stated measurement for the effective center clearance required!
All landrover vehicles (apart from the six stud forward control and the freelander) used the same PCD and the ET is close enough - the P38 changed that, and ushered in the 120mmm PCD era.
However the lump hanging out of the center of the hub changed on the Classic (1981, I think), earlier axles will not take factory alloys.
(You can be an animal and wind them on, but they jam and are an utter nightmare to remove, been there, done that! OK to get a scrapper onto a recovery truck/trailer, nut not suitable for road use.)