I'd start with the local guy first to see if he could make a custom radiator to my specifications. You might be surprised. I've used a little rinky-dink shop a couple of miles from me for years, good work, good price.
Here's the only listing in your town....
http://maps.google.com/maps?hl=en&bt...85604656852928
And here are 3 listings in Pueblo.....
http://www.google.com/search?hl=en&q...=Google+Search

Looooooove the look of your truck.