In an earlier post on this thread, I mentioned that Darryl Starbird had done some of the work on the one ton Suburban. He helped Dad with the conversion of the rear doors to liftgate/tailgate when the truck was new in 1965, then enlarged the rear wheel openings for the 12 x 16.5 tires three years later.
I recently came across an interesting link by a guy who's apparently obsessed with Darryl Starbird and Darryl's most famous custom car. Check out
http://thepredictaproject.org/. Lots of reading material under the "Menu" link. In one photo you can see a diorama of Darryl's first shop in Wichita where the work was done on the one ton Suburban.
I had the privilege of touring Darryl's museum
http://darrylstarbird.com/ in Oklahoma a few years ago. The Predicta
http://www.darrylstarbird.com/museum_cars/predicta.jpg is on display there.