HELP PLEASE Land Rover Diff. Can someone advise me with regard diff ratios for my 109 workhorse ? Holden motor - high ratio diffs. Rear diff is unserviceable, presume it is a 3.54 ( 13 to 46 teeth ). Broke an axle carrying too much - all down hill from there !! I have a replacement, but it is a 3.9 ...