Yes have done it. Yes is available as a kit. Yes works very well.
1.003 transfer with 32" tyres and she cruises at 120 with ease 😎
4.17 first gear ratio gets you going with a load easily.
Currently averaging 9.5 litres per 100km.
Howd you go with TC selection?
ID have thought that the torque and torque pulses of the 4bd1 (and -t) would have been murder on the lockup clutch and the sprag on the stator