If you intend to take your expedition vehicle back into the US after the trip, I would shy away from the Hilux. I work in Belize from time to time and see quite a few of them down there. Great motors and mechanicals, but the bodies are absolute junk. They rust out in about 10-15 years and that's even away from the coast and its salt air. The newest version might be better in terms of corrosion resistance and if I'm not mistaken they have a turbo diesel, though I'm not sure which specifically. Good luck on the quest!