I've seen Westies do some pretty amazing things in South America, they're pretty nimble! Many years ago I was on a very tough stretch of "road" in Northwestern Brazil, four well-equipped Land Cruisers and a Patrol, and we came across a modified Westphalia with Swiss plates going the other direction. It was a family of four, taking a year off for an overland tour of South America. Comparing my modified FJ70 with the Westie made me feel sheepish and totally changed my opinion of them!