Dave Applebey had one built and backed away from the project over issues with the diffs - not sure quite what but I would expect Steve at SWR to remember the box - must be 15 - 20 k including mods - nice and good value against the other manufactures who quoted me as much as £50k for a minimum of 3!
You also need to look at 4wd transmission loses vs maximum torque capacity of the Sadev boxes - I'm sure they understate maximum torque capacity but its surprisingly light bearing in mind boosted torque figures from the V6
You also need to look at 4wd transmission loses vs maximum torque capacity of the Sadev boxes - I'm sure they understate maximum torque capacity but its surprisingly light bearing in mind boosted torque figures from the V6