Try Robert Redford's almost cult like movie, 'The Milagro Beanfield War' based on one of the three of John Nichols' books from 'New Mexico Trilogy'.
Music for the Redford film is by Dave Grusin, featuring guitarist Angel Romero.
About 2:37 into the trailer you can hear the main guitar theme.
The pistolero theme is pretty cool too, some great chops by Angel, it's not in the trailer however.
Grusin should really circle back around to this and put together a New Mexico Fantasia or something for solo guitar; expand the themes, some bridge sections, some variations.
I'm thinking along the lines of what Giuliani did for Rossini themes.
Does anybody know Dave Grusin. Let's find him and start a mail in.