it has to be from a 2nd gen montero, not the sport, or the 1 ton trucks. the only downside is the fact that they come with 4.63 gears, and higher gears (lower numerically) are hard to find - I have read that ford ring and pinions fit, but I have never tried that so I can't confirm. They do have 31 spline axles, so that could be a good clue.