that is a plan actually, i want to build my own small trailer for the 87 to pull, it (in my head at least) would carry two full size spares, and raise up with simple poles have the ability to lock up for safe storage and on the front carry 6 jerry cans of fuel and on the back and either side of the camper carry water
You can also use 6x5.5 hub pattern so it also uses the same wheels as the montero.
A buddy and I were considering this about 10 years ago hoping we could do it in 2010. Welp, I'm still here.
It's tough to plan something like this but here's a short list of a few things we considered...
1) full set of tools including any specialized tools for Mitsu's.
2) spare rear & front axles for each rig going
3) replacement leafs (for 2.6L rigs)
4) snorkels installed.
5) crawler gears installed (xcase & r&p). Ours were v6's so these existed. Not sure if they exist for the 2.6 drivetrain.
6) either complete medic training for us or bring a medic along
7) full first aid kit including items specific to S.American pathogens/diseases
8) Spanish & if possible a Portuguese speaker.
9) Knowledge of local S. American 4x4 clubs friendly to our goal so we can call for local help if needed.
10) spare r&p gears
11) spare ECU's
12) spare Idle Controllers (v6 engines)
13) satellite phone
14) competent knowledge on how to repair our engines.
That's all I can recall of the top of my head but the list was a lot longer than that.