thnx for the replies boys,mark,i don't use anti roll bars,and i've got front and rear relocation cones.
found a set of coil springs for the defender, again from bearmach fronts are 175lbs/inch and rears 225lbs/inc i think it will be ok but what makes me scratch my head is that for the same amount of lift -2inch- defender use the hardest springs of the three and r/r being the softest,how can you specify the softer springs for the heaviest car or i'm i missing something here? i know some r/r use self leveling units but some 110-130 too,
fridgefreezer-searched through the technical archive and found lots of infos but not the trev's calculator,i'll search again
i will post some pictures when i find the time to fit the new coil springs,