Received my REAR 5.12 gears the other day...for the isuzu 12 bolt ...
However, These gears are 244mm and are made to fit the Trooper 12bolt.
To use them in a VX you will need the axle shafts and 3rd member out of a 98+ Trooper...
It seems isuzu discontinued the smaller 12 bolt (VX style) and all the later ones are the bigger stronger "modified" 12 bolt....the axle shafts are Dana 60 sized and the ring gear is larger also....ARB is availble with these.
I will be installing them very soon...