a. few points, the frames are very different , the only commonality being construction. All rovers since series types are coil front and rear, solid(beam axle) with fully floating hubs.
The RRC apart from Vogue lse are coils . The 110 and 130 have bigger diameter coils at rear , the 130 has secondary coils inside rear main coils. The 90 has rover style diffs front and rear as has RRC, the 110 and 130 had rover type front (apart from some ex mil ) and as mentioned salisbury (Dana) at rear . Bigger and much stronger. RRC with VM avoid PITA . Early 90 and 110 (84-about 88/89) badged 90 or 110 not dfeneder had higher gage alluminium in body panels . You need to be ultra careful buying ex UK as salting on winter roads can cause quite severe corrosion problems. Also some ex mil vehicles did sea wading !! V8 petrol only in early 110 and a very samll number 90 , later 90 V8 auto were special edition and therfore V expensive. HTSH
1986 110 CSW V8i > TD6
1992 90 300tdi auto
1999 P38 DSE Auto
2001 Freelander TD4 Auto