Very nice guitar tone, and tasteful playing. I like the way you traded off the guitar with the horn/piano, and the twin guitar parts really sealed the deal.
what Steve said! I think its very hard to pull off an instrumental that works as well as this one does. The Latin feel and harmony guitar parts reminded me of Hotel California in places.
Some people resort to instrumentals because they aren't confident in their singing abilities, but that's clearly not a problem for you. So I'd have to chalk this one up as a showcase for your guitar playing, which is very nice.