ORIGINAL: hellya
10 mm to let the teeth clear the chassis.. heres my adjustable diif with elcon supports
and heres mine,i think the elcon ones raise the diff an extra 6mm,cheaper to make some diff blocks out of a kitchen board like kengentry - or you can normally pick a set of those alloy fg diff risers up for £10 off ebay,as for the diff - instead of buying a full new adjustable one you can get conversion kits to transform the stock diff