this is the email i got from artic trucks about their navara kit. its a very interesting read. i thought you guys would be interested in hearing what they have in mind, i esp was interested about the IFS d44 as well as the 4.56 gears for the nismo locker...vetty interesting.
You have lot of questions. We do not offer the AT38 modifications as a kit. Only as a modifications performed in Arctic Trucks factory. But some parts from it can be bought separately.
The D44 is not a solid axle swap. The original differential is replaced with a specially built D44 that is almost a bolt-in. it is necessary to cut away one minor bracket. It takes about 15min with painting and priming.
Although the installation is very simple you have know that AT does not have any service outside of Iceland and Norway so getting support and service will be very slow and probably also expensive. You should take that into account. We have not offered this as a kit so far but that can be done. It is a matter of interest from the customers.
We do not offer 4,88:1 gears, only 4,56:1. Yes those can be installed into your axle but this is a special setup with parts from AT to make it fit. As for the front we have not had many request for the parts so no decision has been taken to sell these parts without installation with them. Yes, they work with the OEM locker.
You will also need speedometer correction, and that is a modifications that we only perform here, in house.
AT does not offer SAS and will not do it. It will never give the same handling and drivability as the IFS. If you want SAS we recommend the Nissan Patrol (that you haven’t got over there I believe) or some other car.
If you have any other question please do not hesitate to ask.