For the people driving a RDH Isuzu MU Wizard (3.1TD) in North America and have their radiator kick the bucket I've tested if you can fit a 2000 Rodeo (3.2L V6) radiator instead.
Yes you can.
It requires slight trimming of the radiator fan shroud 'pins' at the bottom. And you have to get creative mounting the top of the shroud (I chose tiewraps as a temporary fix) but it works. To clarify you use the original 4JG2 shroud.
The coolant hoses are the same size and location, no changes there. You have to put longer transmission oil hoses on but that's very easy (think I used 4-5 feet).
The Rodeo radiator is slightly bigger but it fits. Uses the same mounts at the bottom.
I've used the clamp from the old radiator on the top and it seems to work just fine.
If people are wondering if they can also swap the Rodeo Fan with the 4jG2; no, it turns the other direction Mounting holes are the same though.