It really depends on the individual, the use of the Montero during the trip,,, if another vehilcle is accompanying and the distance from Syphilization.
I alway seem to be alone(I smell bad and am one grouchy SOB)and these days I hang in Carrizo Plains National Monument where you won't see another human for weeks. Therefore I carry an ammo can full of spare electronic parts:
Distributor
ECU
ECU relay
Ignitor
coil
mass air sensor

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.