2" Spring, 2" body a guard trim will do it. If you not got the dosh 5k ish to beef up rover diffs as said. Use 4.11 Pootrol front and Toymota 80 series rear are not bad as have correct offset and very good brakes. Just keep in mind unsprung weight and diff hight of Nissota conversoin
Have a search. A of info herehttp://www.aulro.com/afvb/search.php

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Strange Rovers Down Under 
4BD1T 120" 110 /3 Rangies:/ 3 series 1's/ 2 series 2's/2 series 3 88's/2
series 3 109's and a heap of rice burners