US RADIATOR has one to match around $300 total with shipping, maybe a little less. Since the truck's cooling is SO important, it just did not seem logical to me when I had to replace vs. rebuild. I'd rather new when at all possible.

1960 GMC 305A V-6 Gallery Page
Remember, the government cannot give --anything to anyone --that they have not first taken away from someone else.
BUY AMERICAN http://www.stillmadeinusa.com/index.html