Most folks on the f-list are already tuned in to
springkink so have probably already seen this. It's good, and different, so I'm adding the link to my lj mostly for personal reference.
Westward by
dogmatix_san. (Rating, PG)
(Crossover: Saiyuki x LOTR. Definitely Gojyo/Hakkai, probably Sanzo/Goku. This fic is a bit difficult to describe, save that the key elements of both sources remain largely intact. Really nicely done.)