Outside of my '54 Tandem conversion, this '56 Chevrolet 10500 series Tandem, is the only one I've seen in person. I've seen this truck at several ATHS Truck Shows, across the U.S.It's owned by, Ron R.D. Hairell, of Winslow, Arizona.This truck was also a Factory Automatic, with, aux. trans, hooked to that.
http://www.hankstruckpictures.com/pix/trucks/road_trip_may2004/day05/dsc_1913.jpg What year, are you looking for. I'll keep a lookout for you.