I uploaded a pdf version of The Aztecs on the Free Books page.
We might think about Atomik Aztex in terms of its formal aspects. In Foster’s prefatory note he warns us that the novel is essentially plotless– i.e. that it doesn’t meet the conventions of a 19th century text such as Adventures of Huckleberry Finn. AA thus represents a kind of break with our expectations of how a novel works (though perhaps these have already been undermined by Fuentes). In this regard– and in conjunction with various other formal peculiarities– AA is a postmodern work.