my buddy had an early 2000's toyota,
he got it at a salvage sale and rebuilt the front end, turned out really nice, he had maybe $5000 in it.
got a letter from toyota offering to buy it back as part of a recall/lawsuit (?) for frames rusting out prematurely
he responded and was told to take it to a dealer in pittsburgh for evaluation.
they gave him $14,000, which he applied to a new tacoma.
for a truck he had $5000 into, reconstructed title and all
his understanding was, it was headed for the crusher.
so yeah, toyota's are infamous for frame/body rot, at least here in the snow belt.