Sure, everything will be looked at, bumper to bumper: I always "zero miles" my cars whenever I get a new one, since they're almost always "locally used" and African use is not kind on cars and stuff... 😁 All fluids, grease, ball joints, bearings, seals, anything that sloshes, slides, turns or...
After looking at a dozen or more Sequoias and Tundras for sale (a number of them come from the US and Canada through the ports of Cotonou and Lagos), I found every single one of them with tired innards and very poor maintenance record, though most had new, shiny paint jobs... Lipstick on a old...
Overland, if you want to drive across Africa in a Toyota, the Sequoia is not the right pony. Except for West Africa, where they get some from Canada, on most of the continent you won't find them, which means no parts, and no "mechanics" familiar with it.
Go for a Series 100 Land Cruiser. If you...
Reviving an old thread again... Because it's crucial info. Here is a post-timing belt failure teardown of a 4.7 2UZ-FE, from a Tundra. Spoiler alert... Nothing bad happened inside. Interesting insight video.