I have no personal experience with them but they were certainly available for D1s about 10 years ago when I enquired about fitting them to my Disco - the installer did not recommend them for any vehicle as he indicated that he had a number of people coming back with broken diffs/lockkas - not sure of the reason. However my brother-in-law had them fitted to his hilux and he had the same issues - 3 broken diffs/lokkas and he ended up removing them and putting in airlockers as the cost was getting too high in repairs - again not sure of the reason for failures but the car did a lot of rough club work.
Gazzz
REMLR 243
2007 Range Rover Sport TDV6
1977 FC 101
1976 Jaguar XJ12C
1973 Haflinger AP700
1971 Jaguar V12 E-Type Series 3 Roadster
1957 Series 1 88"
1957 Series 1 88" Station Wagon
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