I Have not done this but a weekend ago is seen a 1960 peterbuilt on a ford one ton chassis with a DD 4-53T, see the pics here:

web page

The are from the Rocky Mountain Chapter of the American Truck Historical Society 4th Annual Truck Show in Salina September 10-11, 2005 At the Art Robinson Transport Museum

1965 GMC 3500 Rescue in the Stovebolt Gallery

My Facebook Links:
Jolly Goodfellow.
the 6066 GMC Guy.
Jolly's Truck & Car Show Page.
Owner of ~ 1965 GMC 3500 Custom Rescue Squad {Black Built Bodies}.