Originally Posted by 
n plus one
				 
			I'd strongly encourage you to look into your spares arrangements, diagnostic equipment/capabilities and fuel filtering arrangements - there a quite a few options to replace/augment/upgrade the existing fuel filter system - plenty of info on this forum.
Not trying to derail your thread but I think this will be more valuable than spending too much of your focus on wheels/tyres/suspension.
My (MY09) truck is set up for long distance remote touring (though not the extremes of cold you are likely to experience) and will hopefully do a lap of South America one day - PM if you'd like to chat about other mods.