This link was posted by another member here (Slorio?) on another forum. Although not a true by-the-bolts restoration, it's a beautiful truck. It's listed as a 1961 and shows the VIN plate on the door and a detailed photo as well. The kick panel plate is covered by a utility trash bag but maybe it's still there.
http://www.hemmings.com/classifieds/...0/1696534.html
I too had heard that some trucks had the VIN stamped on top of the frame rail, just below the driver-side cab area. I heard this applied to Chevy trucks only and not on GMC's. My 1970 GMC did not have a partial VIN stamping by the power steering box frame area.