Mind you this is an example but a current ad.
$250 in Roswell work for you? Another $150 for the matching rear.
http://roswell.craigslist.org/pts/3929956327.html
Might try this guy as well you never know.
http://albuquerque.craigslist.org/pts/3893091982.html
However you are going to need to do some research and confirm exactly what will bolt up with the least mods. I know there are a lot of threads but K10s are pretty low on my research scale at least since I got my dogs and now need a bigger truck.