i talked to both borg warner and isuzu about the vx transfer case - other isuzu cases will work but the gearing is slightly different - the vx transfer case is completely unique to only the vx no other vehicle ever - confirmed this by both companies when doing my rebuild - so will another case work? probably - will it be exactly the same? no - and you'll prob always have a check engine light (which can be solved by taking the bulb out)
that being said i dont see any real benefit to having the actual vx transfer case compared to one off a rodeo - especially if you can maintain tod regardless of what the stupid dash lights say - would be much easier to find parts for the trooper or rodeo tcase in the future (like the seals i had to wait 2 months for because they had to come on that slow boat from japan - both companies confirmed they were completely unique seals to the vx tcase - actually, the borg warner guy found one of the 3 i needed in a current case they make for hd ford pickups but i still needed the other 2)